Is hydrofluoric acid attacking glass and etching designs in glass a physical change?

Is hydrofluoric acid attacking glass and etching designs in glass a physical change?
by

1 Answer

Answer :

No, it is a chemical change. The glass is changed into newsubstances where it is etched.
by
selected by

Related questions

Etching a hybrid glass ionomer-composite a. is necessary for composite resin bonding b. is not necessary for composite resin bonding c. is necessary for adding a glass ionomer cement for repair d. is not necessary for adding a glass ionomer cement for repair e. a 3-5 second etch with 10% phosphoric acid is recommended

Description : Etching a hybrid glass ionomer-composite a. is necessary for composite resin bonding b. is not necessary for composite resin bonding c. is necessary for adding a glass ionomer cement for repair ... glass ionomer cement for repair e. a 3-5 second etch with 10% phosphoric acid is recommended

Last Answer : b. is not necessary for composite resin bonding

Hydrofluoric acid is not kept in glass bottles because it reacts with - (1) visible light (2) silicon dioxide of glass (3) aluminium oxide of glass (4) sodium oxide of glass

Description : Hydrofluoric acid is not kept in glass bottles because it reacts with - (1) visible light (2) silicon dioxide of glass (3) aluminium oxide of glass (4) sodium oxide of glass

Last Answer : (2) silicon dioxide of glass

Glass lined vessels are not used for handling (A) Dilute H2SO4 (B) Dilute HNO3 (C) Dilute HCI (D) Hydrofluoric acid

Description : Glass lined vessels are not used for handling (A) Dilute H2SO4 (B) Dilute HNO3 (C) Dilute HCI (D) Hydrofluoric acid

Last Answer : (D) Hydrofluoric acid

Glass lined vessels are not used for handling/storing (A) Dilute H2SO4 (B) Dilute HNO3 (C) Dilute HCl (D) Hydrofluoric acid

Description : Glass lined vessels are not used for handling/storing (A) Dilute H2SO4 (B) Dilute HNO3 (C) Dilute HCl (D) Hydrofluoric acid

Last Answer : (D) Hydrofluoric acid

Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass. (A) Lead (B) Borosilicate (C) Soda lime (D) Alkali silicate

Description : Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass. (A) Lead (B) Borosilicate (C) Soda lime (D) Alkali silicate

Last Answer : (B) Borosilicate

The effectiveness of the acid etch is dependent on which of the following factors: A. Material must be used to clean the surface of the tooth prior to etching B. The effectiveness of the itchant C. The chemical and physical nature of the tooth D. The area and surface of the enamel to be itched

Description : The effectiveness of the acid etch is dependent on which of the following factors: A. Material must be used to clean the surface of the tooth prior to etching B. The effectiveness of the itchant C. The chemical and physical nature of the tooth D. The area and surface of the enamel to be itched

Last Answer : C. The chemical and physical nature of the tooth

What stencils do I use to etch glass mugs with Etching Cream?

Description : What stencils do I use to etch glass mugs with Etching Cream?

Last Answer : Need Answer

Which can do glass etching?

Description : Which can do glass etching?

Last Answer : Which can do glass etching? A. A) `HlO_4 ` B. (B) HF C. (C) `HNO_3` D. (D) `SiF_4`

How To Make A Glass Etching

Description : How To Make A Glass Etching

Last Answer : When you walk through the halls of a furniture store, you will see a mirror that seems to hold a painting inside. When you approach the mirror, you will realize that the image is painted on the ... room with their classic beauty. Unveil yours to your friends and hear them give silent oohs and ahs.

How can you improve the adhesion of a fissure sealant: A. Acid etching technique

Description : How can you improve the adhesion of a fissure sealant: A. Acid etching technique

Last Answer : A. Acid etching technique

With dentin bonding agent, you apply: A. First acid etching to dentine and then bonding agent B. Bonding agent directly to dentine C. Chelating agent (EDTA) and bonding agent

Description : With dentin bonding agent, you apply: A. First acid etching to dentine and then bonding agent B. Bonding agent directly to dentine C. Chelating agent (EDTA) and bonding agent

Last Answer : A. First acid etching to dentine and then bonding agent

Is hydrofluoric acid ionic or covalent bonding?

Description : Is hydrofluoric acid ionic or covalent bonding?

Last Answer : What is the answer ?

Which one of the following acids is used in battery? (1) Hydrochloric acid (2) Hydrofluoric acid (3) Sulphuric acid (4) Sulphurous acid

Description : Which one of the following acids is used in battery? (1) Hydrochloric acid (2) Hydrofluoric acid (3) Sulphuric acid (4) Sulphurous acid

Last Answer : (3) Sulphuric acid Explanation: Battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy. Possessing different chemical properties ... domestic acidic drain cleaner, electrolyte in lead-acid batteries and various cleaning agents.

Addition polymerisation takes place either by a free radical mechanism or ionic mechanism depending on the reagents used. Free radical polymerisation is catalyzed by __________, which decompose to give free radicals. (A) Organic peroxides (B) Sulphuric acid (C) Hydrofluoric acid (D) None of these

Description : Addition polymerisation takes place either by a free radical mechanism or ionic mechanism depending on the reagents used. Free radical polymerisation is catalyzed by __________, which decompose to give free radicals. (A) Organic peroxides (B) Sulphuric acid (C) Hydrofluoric acid (D) None of these

Last Answer : (A) Organic peroxides

Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C? (A) Monel (B) Stainless steel (C) Graphite (D) Kel-F and Teflon

Description : Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C? (A) Monel (B) Stainless steel (C) Graphite (D) Kel-F and Teflon

Last Answer : (B) Stainless steel

During preparation of amorphous silicon, the product is washed with hydrofluoric acid to

Description : During preparation of amorphous silicon, the product is washed with hydrofluoric acid to

Last Answer : remove unreacted silica.

What is the role of the following in the extraction of amorphous silicon? a) Hydrochloric acid b) hydrofluoric acid

Description : What is the role of the following in the extraction of amorphous silicon? a) Hydrochloric acid b) hydrofluoric acid

Last Answer : a) Hydrochloric acid is used to dissolve magnesium oxide b) Hydrofluoric acid is used to remove unreacted silica

Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and (A) Sulphuric acid (B) Phosphoric acid (C) Hydrochloric acid (D) Hydrofluoric acid

Description : Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and (A) Sulphuric acid (B) Phosphoric acid (C) Hydrochloric acid (D) Hydrofluoric acid

Last Answer : (A) Sulphuric acid

Which of the following is the weakest acid? w) hydrochloric acid x) hydrofluoric acid y) sulfuric acid z) nitric acid

Description : Which of the following is the weakest acid? w) hydrochloric acid x) hydrofluoric acid y) sulfuric acid z) nitric acid

Last Answer : ANSWER: X -- HYDROFLUORIC ACID

Which one of the following acids is used in battery ? (1) Hydrochloric acid (2) Hydrofluoric acid (3) Sulphuric acid (4) Sulphurous acid

Description : Which one of the following acids is used in battery ? (1) Hydrochloric acid (2) Hydrofluoric acid (3) Sulphuric acid (4) Sulphurous acid

Last Answer : Sulphuric acid

They are preferred as wall treatment because of wide variety of designs & colours creating an illusionary impression. a. Glass b. wall paper c. Cladding d. Painting

Description : They are preferred as wall treatment because of wide variety of designs & colours creating an illusionary impression. a. Glass b. wall paper c. Cladding d. Painting

Last Answer : b. wall paper

Etching of marble, limestone, jewellery , etc. is caused by pollutant

Description : Etching of marble, limestone, jewellery , etc. is caused by pollutant

Last Answer : Etching of marble, limestone, jewellery , etc. is caused by pollutant A. `CO_(2)` B. CO C. `SO_(2)` D. `CH_(4)`

Etching techniques are used always to: A. minimise the leakage of restorations B. for aesthetic considerations

Description : Etching techniques are used always to: A. minimise the leakage of restorations B. for aesthetic considerations

Last Answer : A. minimise the leakage of restorations

Dry etching refers to removal of material, typically a masked pattern of semiconductor material, by exposing...

Description : Dry etching refers to removal of material, typically a masked pattern of semiconductor material, by exposing material to a bombardment of ions which contain (a) Plasma of nitrogen, chlorine and ... of nitrogen, phosphorous and boron trichloride (d) Plasma of nitrogen, chlorine and boron trioxide

Last Answer : Plasma of nitrogen, chlorine and boron trichloride. Other gases include argon and helium.

Will this emotional support dog attacking a passenger change anything?

Description : Will this emotional support dog attacking a passenger change anything?

Last Answer : The link didn’t work, but an “emotional support dog” that is trained will not attack anyone or anything. And the airline has a responsibility to not let dangerous animals on a plane.

Which one of the following was not the basis invoked by the US for attacking Iraq in March 2003? (1) Iraq possessed weapons of mass destruction (2) Saddam Hussain had links with Al Quaeda (3) Regime Change in Iraq (4) Iraq had not withdrawn from Kuwait complety

Description : Which one of the following was not the basis invoked by the US for attacking Iraq in March 2003? (1) Iraq possessed weapons of mass destruction (2) Saddam Hussain had links with Al Quaeda (3) Regime Change in Iraq (4) Iraq had not withdrawn from Kuwait complety

Last Answer : (4) Iraq had not withdrawn from Kuwait complety Explanation: The question of withdrawal of Iraq from kuwait was an issue in 1991 Iraq war. This was not an issue during 2003 Iraq war.

Is there a strategic advantage to Russia attacking Ukraine in mid-winter, as opposed summer or fall?

Description : Is there a strategic advantage to Russia attacking Ukraine in mid-winter, as opposed summer or fall?

Last Answer : Ras Putin is drawing on his own nations history as a cautionary measure. If his plan backfires and he starts a major war, and the NATO alliance gets any ideas about chasing his armies back to ... drops, but he has surface to air missile installations to rely on I'm sure. Just speculating here.

Who are attacking Asian-Americans lately and why?

Description : Who are attacking Asian-Americans lately and why?

Last Answer : Who are doing it, and why? People who blame the pandemic on any and all Asians.

What are your thoughts on attacking an opponent's traits to discredit them?

Description : What are your thoughts on attacking an opponent's traits to discredit them?

Last Answer : answer:I think that the dogless or childless people will have a slightly different perspective than someone who has dogs or kids, but that doesn't mean that the people with the dogs or the kids are better or ... have a mother, who has no medical training, but who has 6 kids, help you to give birth?

Cannibal jellies are attacking Dr Jelly, how do we help him?

Description : Cannibal jellies are attacking Dr Jelly, how do we help him?

Last Answer : LEt him out of the jar quick!

Can someone with some experience with twins explain why my granddaughter keeps attacking her twin brother?

Description : Can someone with some experience with twins explain why my granddaughter keeps attacking her twin brother?

Last Answer : Sibling rivalry.

Do you see that Mayor Rob Ford's latest is like Iraq attacking Kuwait?

Description : Do you see that Mayor Rob Ford's latest is like Iraq attacking Kuwait?

Last Answer : That’s… more than a little hyperbolic. But yeah, he continues to be a train wreck.

How to stop a hyper kitten from attacking older cat?

Description : How to stop a hyper kitten from attacking older cat?

Last Answer : answer:One of my cats when he was just a little kitten was the same exact way. He was a crazy little guy and would attack and play with everything. I remember one time I woke up in the ... sure his energy level will decrease. And if you are still having problems, maybe you should consult your vet.

Help! My new male cat is attacking one of my female cats.

Description : Help! My new male cat is attacking one of my female cats.

Last Answer : Is the male cat neutered? Neutered cats are a lot more mellow and have fewer behavioral problems.

If the T-Rex from Jurassic Park was attacking, how would I keep my wild 3-yr.-old still?

Description : If the T-Rex from Jurassic Park was attacking, how would I keep my wild 3-yr.-old still?

Last Answer : Tell them you are playing a game and they will get a huge gift when they do well. Or keep feeding them sweets, this usually keeps them quiet.

Aren't the Republicans making themselves look like idiots for attacking the Whitehouse over the disaster in the Gulf?

Description : Aren't the Republicans making themselves look like idiots for attacking the Whitehouse over the disaster in the Gulf?

Last Answer : The President is suppose to be a leader, not a watcher.

Why am I obsessed with finding video of Tillikum the killer whale attacking and killing his trainer at SeaWorld?

Description : Why am I obsessed with finding video of Tillikum the killer whale attacking and killing his trainer at SeaWorld?

Last Answer : answer:I don’t think there was video of the attack. It is an unfortunate desire, but a human one.

WHAT IS THIS SPIDERWEBS WITH ORANGE STUFF INSIDE THAT IS ATTACKING MY TOMATO PLANTS AND LEAVING THEM BROWN?

Description : WHAT IS THIS SPIDERWEBS WITH ORANGE STUFF INSIDE THAT IS ATTACKING MY TOMATO PLANTS AND LEAVING THEM BROWN?

Last Answer : Spider mites. Neem oil will get rid of them it's organic, safe and won't kill ladybugs or bees just aphids and mites and bad stuff that eats your leaves. You can also hose it down to get rid ... best. I heard you can also use Dial dishwasher detergent mixed with water I'm not sure how much though

Insects are attacking my new clematis plant

Description : Insects are attacking my new clematis plant

Last Answer : After the sun goes down & the plant has cooled off................mix up 2 tablespoons DAWN & 1 qt water and spray good get under flowers & leaves......................spray again if it rains.... ... in the cement container, checked the next day.................ants when someplace else.............

Why are Aphids Attacking my Lupin

Description : Why are Aphids Attacking my Lupin

Last Answer : after the sun goes down and the plant cools off mix up 2 tablespoons dawn & 1 qt water and spray...............spray again if you see them or it rains.

there is some insect attacking the leaves on my egg plant

Description : there is some insect attacking the leaves on my egg plant

Last Answer : answer for what is attacking my egg plant leaves

What kind of bugs are attacking my bok choi

Description : What kind of bugs are attacking my bok choi

Last Answer : might be something in the beetle family................and the plants cool off...........mix up 2 tablespoons dawn & 1 qt water and spray.............spray the ground around it and any other plants..............it won't kill them but they will go somewhere else. spray again after it rains.

What bug is attacking mt cone flowers and coriopses?

Description : What bug is attacking mt cone flowers and coriopses?

Last Answer : Need Answer

What is attacking my crimson barberry bushes

Description : What is attacking my crimson barberry bushes

Last Answer : Could be spder mites. Try a strong stream of water from the hose. Spray from the bottom up and under the leaves too. Do this once or twice a day for a few days.

What is the white worm attacking my dogwood tree every year & how do I prevent it?

Description : What is the white worm attacking my dogwood tree every year & how do I prevent it?

Last Answer : If your not afraid of them, put on throw away gloves and pick them off into soapy water........................for now you can spray them after the sun goes down & the trees cools ... for the winter spray it with dorment oil.........do a spring application follow the directions on the container.

Abandoning peaceful trade policy and attacking port ...... ?

Last Answer : Abandoning peaceful trade policy and attacking port - - John Childe of English navy.

How would you describe the modern style of playing football considering the recent trends of attacking football?

Description : How would you describe the modern style of playing football considering the recent trends of attacking football?

Last Answer : Correct me if am wrong, but isn't attacking the best form of pressing for a goal than defensive? This is I what think at least. I also prefer the attacking formation better than the defensive ... trend and stop a possible loose while the other helps advance a trend and brings forth a possible win.

Which of the following is attacking species in conversion Y to P ?

Description : Which of the following is attacking species in conversion Y to P ?

Last Answer : Which of the following is attacking species in conversion Y to P ? A. `C Cl_(2)` B. `: CHCl` C. `:CH_(2)` D. `CH_(2)Cl`

In the reaction of phenol with `CHCl_(3)` and aqueous `NaOH` at `70^(@)`, the electrophile attacking the ring is:

Description : In the reaction of phenol with `CHCl_(3)` and aqueous `NaOH` at `70^(@)`, the electrophile attacking the ring is:

Last Answer : In the reaction of phenol with `CHCl_(3)` and aqueous `NaOH` at `70^(@)`, the electrophile attacking the ring is: ... ` C. `:"CCl"_(2)` D. `COCl_(2)`

Who did the Seminole join forces with in attacking settlement and forts?

Description : Who did the Seminole join forces with in attacking settlement and forts?

Last Answer : A group of African-Americans that had escaped slavery.