What happens to the chemical properties of substances during a chemical reaction?

What happens to the chemical properties of substances during a chemical reaction?
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what All substances have characteristic properties. If one of these properties can be observed without changing the identity of the substance, it must be A. universal property. B. physical property. C. biological property. D. chemical property.?

Description : what All substances have characteristic properties. If one of these properties can be observed without changing the identity of the substance, it must be A. universal property. B. physical property. C. biological property. D. chemical property.?

Last Answer : B: Physical Property

Why does helium dose not react with other substances. dose this mean that helium has no chemical properties?

Description : Why does helium dose not react with other substances. dose this mean that helium has no chemical properties?

Last Answer : No, helium is unreactive and this is a chemical property !

(3) the number of electrons orbiting around the nucleus Explanation: The chemical behavior of an atom is determined by the number of electrons on its outer shell. As for the chemical bonding properties of the atom, the electron configuration determines how it will bond, with what it will bond, and in what ratio atoms will bond to form the 20,000,000 different substances on Earth.

Description : (3) the number of electrons orbiting around the nucleus Explanation: The chemical behavior of an atom is determined by the number of electrons on its outer shell. As for the chemical bonding properties of ... , and in what ratio atoms will bond to form the 20,000,000 different substances on Earth.

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In a chemical reaction what are the substances that interact?

Description : In a chemical reaction what are the substances that interact?

Last Answer : Need answer

What substances combine without a chemical reaction?

Description : What substances combine without a chemical reaction?

Last Answer : These substances are called reactants.

What are the substances that interact to form new substances in a chemical reaction called?

Description : What are the substances that interact to form new substances in a chemical reaction called?

Last Answer : Reactants (apex)

What refers to the new substances present after a chemical reaction?

Description : What refers to the new substances present after a chemical reaction?

Last Answer : result

Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be (A) Same (B) Doubled (C) Halved (D) One fourth of its original value

Description : Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be (A) Same (B) Doubled (C) Halved (D) One fourth of its original value

Last Answer : (A) Same

"The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances". This is the (A) Lewis-Randall rule (B) Statement of Van't Hoff Equation (C) Le-Chatelier's principle (D) None of these

Description : "The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances". This is the (A) Lewis- ... (B) Statement of Van't Hoff Equation (C) Le-Chatelier's principle (D) None of these

Last Answer : (D) None of these

Third law of thermodynamics is helpful in (A) Prediction of the extent of a chemical reaction (B) Calculating absolute entropies of substances at different temperature (C) Evaluating entropy changes of chemical reaction (D) Both (B) and (C)

Description : Third law of thermodynamics is helpful in (A) Prediction of the extent of a chemical reaction (B) Calculating absolute entropies of substances at different temperature (C) Evaluating entropy changes of chemical reaction (D) Both (B) and (C)

Last Answer : D) Both (B) and (C)

What are the properties of ferromagnetic substances ?

Description : What are the properties of ferromagnetic substances ?

Last Answer : 1. They are very attracted by magnets. 2. They are solid and crystalline. 3. They have a magnetic field. 4. They have specific curry points. 5. Their magnetism or tendency is very high and positive ... reduced. 10. When placed in a magnetic field, they move from the weaker part to the stronger part.

What are five physical properties of ionic substances?

Description : What are five physical properties of ionic substances?

Last Answer : Five physical properties of ionic substances: density, hardness, melting point, boiling point, thermal conductivity.

In a physical change some of the substances in a material change but the properties if the material stay the same?

Description : In a physical change some of the substances in a material change but the properties if the material stay the same?

Last Answer : Need answer

What are five physical properties of ionic substances?

Description : What are five physical properties of ionic substances?

Last Answer : Five physical properties of ionic substances: density, hardness, melting point, boiling point, thermal conductivity.

Properties of substances like pressure, temperature and density, in thermodynamic coordinates are  (a) path functions  (b) point functions  (c) cyclic functions  (d) real functions (e) thermodynamic functions.

Description : Properties of substances like pressure, temperature and density, in thermodynamic coordinates are  (a) path functions  (b) point functions  (c) cyclic functions  (d) real functions (e) thermodynamic functions.

Last Answer : Answer : b

Differentiate ceramic substances based on properties.

Description : Differentiate ceramic substances based on properties.  

Last Answer : Classification of ceramics: 1.Glasses: Glasses Ceramic glasses 2.Natural ceramics: Bones Rocks and minerals 3.Traditional ceramics: White wares Structural clay products ...  Dense SiC Nitride ceramics: silicon nitride  Silicon aluminium oxynitride  Aluminium nitride

Which one of the following best defines the word “allotropes”? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between those of metals and nonmetals D Atoms of a given atomic number that have a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Description : Which one of the following best defines the word allotropes ? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between ... a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Last Answer : A Different structural forms of an element 

What happens during a chemical reaction?

Description : What happens during a chemical reaction?

Last Answer : A chemical reaction involves the breaking of chemical bonds between the atoms or groups of atoms of reacting substances and rearrangement of atoms making new bonds to form new substances.

The chemical reaction at one time the rate of forward and backward reaction becomes equal that state is called Equilibrium state. In a chemical equilibrium, the following properties remain unchanged with time. Pressure, Temperature, density, color Pressure, Temperature, density, color

Description : The chemical reaction at one time the rate of forward and backward reaction becomes equal that state is called Equilibrium state. In a chemical equilibrium, the following properties remain unchanged with time. Pressure, Temperature, density, color Pressure, Temperature, density, color

Last Answer : Who proposed law of mass action ?

Pick out the wrong statement. (A) Catalytic activity of enzyme catalysed reactions which is affected by temperature, pH value & chemical agents, is maximum at a temperature of about 45°C(B) Most of the enzyme catalysed reactions involve at least two substrates (C) Enzymes help in increasing the activation energy of the reaction (D) Equilibrium concentrations in enzyme catalysed reactions can be calculated by using the thermodynamic properties of substrates & prod

Description : Pick out the wrong statement. (A) Catalytic activity of enzyme catalysed reactions which is affected by temperature, pH value & chemical agents, is maximum at a temperature of about 45°C ... in enzyme catalysed reactions can be calculated by using the thermodynamic properties of substrates & prod

Last Answer : (C) Enzymes help in increasing the activation energy of the reaction

(a) Write the essential condition for the following reaction to take place: 2AgBr—-> 2Ag + Br2 Write one application of this reaction. (b) Complete the following chemical equation of a chemical reaction 2FeS04 — chemical-reactions-and-equations-chapter-wise-important-questions-class-10-science-5 (c) What happens when water is added to quick line. Write chemical equation. -Chemistry

Description : (a) Write the essential condition for the following reaction to take place: 2AgBr--> 2Ag + Br2 Write one application of this reaction. (b) Complete the following chemical equation of a chemical ... science-5 (c) What happens when water is added to quick line. Write chemical equation. -Chemistry

Last Answer : Answer. This reaction is used in photography. (c) Slaked lime is formed with hissing sound and lot of heat is envolved.

What happens to the total mass of the reactants in a chemical reaction?

Description : What happens to the total mass of the reactants in a chemical reaction?

Last Answer : Need answer

What happens when a catalyst is added to a system at equilibrium? A The reaction follows an alternative pathway of lower activation energy. B The heat of reaction decreases. C The potential energy of the reactants decreases. D The potential energy of the products decreases. E The rate of chemical reaction decreases.

Description : What happens when a catalyst is added to a system at equilibrium? A The reaction follows an alternative pathway of lower activation energy. B The heat of reaction decreases. C The potential ... decreases. D The potential energy of the products decreases. E The rate of chemical reaction decreases.

Last Answer : A The reaction follows an alternative pathway of lower activation energy.

A famous chemist was murdered in his own lab. There was no evidence except for a piece of paper with the names of chemical substances on it. On the day he was murdered, the chemist had only 3 visitors: his wife, Mary, his nephew Nicolas, and his friend Johnathan. The police arrested the murderer right away. How did they know who it was? -Riddles

Description : A famous chemist was murdered in his own lab. There was no evidence except for a piece of paper with the names of chemical substances on it. On the day he was murdered, the chemist had only ... his friend Johnathan. The police arrested the murderer right away. How did they know who it was? -Riddles

Last Answer : The piece of paper had a clue on it. If you combine the short names of the chemical substances on the paper, you’ll get a name: Ni-C-O-La-S.

$ Life on earth originated by interaction of the various chemical substances in the broth of the sea. ! The first organisms were, pherhaps the chemoau

Description : $ Life on earth originated by interaction of the various chemical substances in the broth of the sea. ! The first organisms were, pherhaps the chemoau

Last Answer : $ Life on earth originated by interaction of the various chemical substances in the broth of the sea. ! The ... wrong D. If both As and R are wrong.

When a chemical change occurs what do you know about the amount of matter in the new substances What is this known as?

Description : When a chemical change occurs what do you know about the amount of matter in the new substances What is this known as?

Last Answer : The amount of matter in the reactants is equal to the amount ofmatter in the products. This is the Law of Conservation ofMatter.

What do we call substances likie amylase and protease which speed up chemical reactionds?

Description : What do we call substances likie amylase and protease which speed up chemical reactionds?

Last Answer : What is the answer ?

What are Cells that are triggered by light vibrations sounds touch or chemical substances are called what?

Description : What are Cells that are triggered by light vibrations sounds touch or chemical substances are called what?

Last Answer : Need answer

What are the chemical substances that compose the plasma membrane ?

Description : What are the chemical substances that compose the plasma membrane ?

Last Answer : The main constituents of the plasma membrane are phospholipids, proteins and carbohydrates. The phospholipds, amphipathic molecules, are regularly organized in the membrane according to their polarity: two layers of ... bound to proteins and to phospholipids in the outer face of the membrane.

Which of the following substances undergoes chemical change on heating? (1) Sodium chloride (2) Silica (3) Lead nitrate (4) Platinum wire

Description : Which of the following substances undergoes chemical change on heating? (1) Sodium chloride (2) Silica (3) Lead nitrate (4) Platinum wire

Last Answer : (3) Lead nitrate Explanation: Lead nitrate on heating decomposes to lead monoxide, nitrogen dioxide and oxygen. NO2 is liberated, along with oxygen, as a reddish brown gas.

Which of the following substances undergoes chemical change on heating? (1) Sodium chloride (2) Silica (3) Lead nitrate (4) Platinum wire

Description : Which of the following substances undergoes chemical change on heating? (1) Sodium chloride (2) Silica (3) Lead nitrate (4) Platinum wire

Last Answer : (3) Lead nitrate Explanation: Lead nitrate on heating decomposes to lead monoxide, nitrogen dioxide and oxygen. NO2 is liberated, along with oxygen, as a reddish brown gas.

Which substances regulate the chemical action in the body?

Description : Which substances regulate the chemical action in the body?

Last Answer : Enzyme

Which one of the following pairs of chemical substances, is correctly categorised? (a) Calcitonin and thymosin - Thyroid hormones (b) Pepsin and prolactin - Two digestive enzymes secreted in stomach (c) Troponin and myosin - Complex proteins in striated muscles (d) Secretin and rhodopsin - Polypeptide hormones

Description : Which one of the following pairs of chemical substances, is correctly categorised? (a) Calcitonin and thymosin - Thyroid hormones (b) Pepsin and prolactin - Two digestive enzymes secreted in ... and myosin - Complex proteins in striated muscles (d) Secretin and rhodopsin - Polypeptide hormones

Last Answer : (c) Troponin and myosin - Complex proteins in striated muscles

Prostaglandins are chemical substances thought to a) increase sensitivity of pain receptors. Prostaglandins are believed to increase sensitivity to pain receptors by enhancing the pain-provoking effect of bradykinin. b) reduce the perception of pain. Endorphins and enkephalins reduce or inhibit transmission or perception of pain. c) inhibit the transmission of pain. Endorphins and enkephalins reduce or inhibit transmission or perception of pain. d) inhibit the transmission of noxious stimuli. Morphine and other opioid medications inhibit the transmission of noxious stimuli by mimicking enkephalin and endorphin.

Description : Prostaglandins are chemical substances thought to a) increase sensitivity of pain receptors. Prostaglandins are believed to increase sensitivity to pain receptors by enhancing the pain-provoking ... opioid medications inhibit the transmission of noxious stimuli by mimicking enkephalin and endorphin.

Last Answer : a) increase sensitivity of pain receptors. Prostaglandins are believed to increase sensitivity to pain receptors by enhancing the pain-provoking effect of bradykinin.

A reaction between the substances A and B has been found to give the following data: 3A + 2B -----> 2C + D?

Description : A reaction between the substances A and B has been found to give the following data: 3A + 2B -----> 2C + D?

Last Answer : My reaction is “HUH??”

Two substances, A and B were made to react to form a third substance, A2B according to the following reaction 2A + B → A2 B. Which of the following statements concerning this reaction are incorrect? -Chemistry 9th

Description : Two substances, A and B were made to react to form a third substance, A2B according to the following reaction 2A + B → A2 B. Which of the following statements concerning this reaction are incorrect? -Chemistry 9th

Last Answer : (c) (i), (iii), (iv) Consider the example of H2O

What is produced by the reaction of opposite religious substances ?

Last Answer : Neutral substances are produced by the reaction of opposite substances.

An exothermic reaction is one in which the reacting substances :

Description : An exothermic reaction is one in which the reacting substances :

Last Answer : An exothermic reaction is one in which the reacting substances : A. Have same energy as products ... D. Are at higher temperature than the products

What type of reaction occurs when two or more simpler substances combine to form a more complex one?

Description : What type of reaction occurs when two or more simpler substances combine to form a more complex one?

Last Answer : Need answer

What is the name of substances that reacts or induces a reaction?

Description : What is the name of substances that reacts or induces a reaction?

Last Answer : You think probable to reactants.

Substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected are called - (1) Catalysts (2) Hydrocarbons (3) Oxidising agents (4) Substitutes

Description : Substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected are called - (1) Catalysts (2) Hydrocarbons (3) Oxidising agents (4) Substitutes

Last Answer : (1) Catalysts Explanation: Catalysts are substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected. Eg: hydrogenation of vegetable oils using a nickel catalyst.

A reaction which is catalysed by a base is catalysed by all substances which have a tendency to (A) Lose a proton (B) Gain a proton (C) Gain an electron (D) None of these

Description : A reaction which is catalysed by a base is catalysed by all substances which have a tendency to (A) Lose a proton (B) Gain a proton (C) Gain an electron (D) None of these

Last Answer : (B) Gain a proton

In an exothermic reaction, the energy of the reacting substances as compared to that of products is (A) More (B) Less (C) Same (D) Either (A) or (B), depends on order of reaction

Description : In an exothermic reaction, the energy of the reacting substances as compared to that of products is (A) More (B) Less (C) Same (D) Either (A) or (B), depends on order of reaction

Last Answer : (A) More

In the method of condensation polymerization, (A) Low-molecular substances are removed from the high molecular substance (B) The reaction proceeds with an evolution of ammonia (C) The reaction proceeds with an evolution of hydrogen chloride (D) All of the above

Description : In the method of condensation polymerization, (A) Low-molecular substances are removed from the high molecular substance (B) The reaction proceeds with an evolution of ammonia (C) The reaction proceeds with an evolution of hydrogen chloride (D) All of the above

Last Answer : Answer: Option D

What happens to meat during chemical change?

Description : What happens to meat during chemical change?

Last Answer : It rots and molds

What happens to chemical bonds during chemical change?

Description : What happens to chemical bonds during chemical change?

Last Answer : What is the answer ?

What happens during chemical reactions From: Apex?

Description : What happens during chemical reactions From: Apex?

Last Answer : energy is given off or absorbed

Is there a chart out there that lists the chemical properties of common plants?

Description : Is there a chart out there that lists the chemical properties of common plants?

Last Answer : http://tinyurl.com/29ys5hb

What chemical/physical properties help compare fuels in combustion engines? and how to apply them.

Description : What chemical/physical properties help compare fuels in combustion engines? and how to apply them.

Last Answer : The ratings for fuel energy, flame propagation, combustion speed are based on comparison with octane in gasoline and pentane or cetane (depending on the applicatton) for diesel or jet fuel.. ... are many textbooks on petroleum technology, the Wiki article and references give a good starting point.

Classify minerals into two groups on the basis of chemical and physical properties and give one example of minerals of each group. -Geography

Description : Classify minerals into two groups on the basis of chemical and physical properties and give one example of minerals of each group. -Geography

Last Answer : Minerals are classified on the basis of their physical properties and chemical properties such as: Metallic Minerals Metallic minerals are those that are rich in metals and a source to procure a variety of ... is rich in building stones i.e. sandstone, granite, marble, fuller's earth, and gypsum