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chemical
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∙ 11y ago
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Why burning of paper is a chemical change?
bcoz once paper is burned it cannot be turned back to its original form
What happens after a substance goes through a chemical change?
Yes because when a chemical change happens the substance may not have some of the physical or chemical properties it had once before. An example of htis would be Dry Ice. This would be an example because dry ice was once just ice then they add a chemical and it turns into dry ice.
What happens once a year but every day of the year?
Birthdays.
Why can't thermoset plastics change shape?
Thermoset plastics cannot change shape because they undergo a irreversible chemical reaction during the curing process. This reaction, known as crosslinking, creates strong bonds between the polymer chains, making the material rigid and inflexible. Once set, thermoset plastics cannot be melted or reshaped like thermoplastics.
Is bauxite renewable?
While aluminum can be recycled to be made into new aluminum things, aluminum itself is a non-renewable resource, so the answer is no.
What happens to a material that undergoes stress that exceeds its strength?
If a the stress of a material exceeds the yield stress, it will not be able to return to its original length or shape once the force is removed.
What happens when you put water on tin foil?
Aluminum in general is a very reactive metal. So reactive that once it is forged and exposed to the air it reacts with the oxygen in the air to produce a thin layer of aluminum oxide. This thin layer of aluminum oxide prevents the aluminum from further oxidation or rusting. The same thing happens when aluminum is exposed to water. Believe it or not aluminum exposed to water produces hydrogen. The amount of hydrogen produced is so small it is undetectable because once the aluminum is exposed to the water it forms a shield of aluminum oxide preventing further reaction. A way around this reaction block is by making an alloy of gallium and aluminum. Gallium metal is a liquid metal just above room temperature. When gallium is combined with aluminum it doesn't allow the aluminum to form the protective layer of aluminum oxide when exposed to water or oxygen in the air. Allowing the aluminum to continuously react with the water and produce hydrogen gas. I hope this answered your question.
Who is first women who after undergoing a sex change surgery gave birth to a child?
What? Once a woman undergoes a sex change, she no longer has female reproductive parts. Sorry, dude, but, really, just read the question you just asked. See?
What is the mineral makeup of aluminum?
The overwhelming majority of aluminum on earth is mined from a mineral called Bauxite. Once the aluminum is smelted out, it is no longer a mineral - it is an element: Aluminum.
What element was once included among the crown jewels?
aluminum
When snow melts what happens to temp?
Melting is a phase change. Typically what happens is that the snow absorbs heat until it has warmed to the melting point. As it continues to absorb heat, it undergoes an isothermal (the temperature doesn't change) phase change (melts). Once it has melted, it may continue to warm up above the melting point temperature. In practice different parts of the snow will be at different temperatures. The snow at the surface will be absorbing the heat and melting. As it melts, the water from the melted snow runs down into the unmelted snow where it supplies heat to that snow to start warming it up.
What is a bugs life cycle that shows the audlt organism?
The metamorphic life cycle a typical insect undergoes is: egg---larva---pupa---adult. Typically, an insect hatches from an egg into a larva (caterpillar, maggot, etc). Once the larva has grown sufficiently, it will pupate (form a cocoon) where it undergoes its final life cycle change into an adult (moth, fly, etc.).
Why burning of paper is a chemical change?
bcoz once paper is burned it cannot be turned back to its original form
Where can one buy aluminum for a low price?
Once can buy aluminum for a low price from a variety of different sources. Once can try their local hardware store, a scrap yard, or wholesale metallurgy merchants.
What is something that starts with A and happens once a year?
An annual event starts with A and happens once a year.
What happens to tweets once you change your Twitter name?
The only thing that changes when you change your Twitter name is the name at the top of the tweet. The content of your tweets and the number of retweets/favorites stays the same.
what happens in Once?
Everything.
