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Questions and Answers
What is a sign that a new substance is created during a chemical change?
What is a sign that a new substance is created during a chemical change?
- Change of state
- Change of shape
- Change of color (correct)
- Change of size
What is the process of turning a liquid into a gas called?
What is the process of turning a liquid into a gas called?
- Melting
- Condensation
- Freezing
- Boiling (correct)
Which of the following is an irreversible physical change?
Which of the following is an irreversible physical change?
- Mixing salt in water
- Ripping paper
- Burning wood (correct)
- Melting ice into water
Which state of matter has a fixed shape and is almost impossible to compress?
Which state of matter has a fixed shape and is almost impossible to compress?
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In the process of dissolving sugar in water, what is considered the solvent?
In the process of dissolving sugar in water, what is considered the solvent?
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What is the name of the temperature at which a liquid turns into a gas?
What is the name of the temperature at which a liquid turns into a gas?
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Why are chemical changes always irreversible?
Why are chemical changes always irreversible?
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Which physical change is reversible?
Which physical change is reversible?
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What happens to the speed of dissolving sugar in water as the temperature increases?
What happens to the speed of dissolving sugar in water as the temperature increases?
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Which process slowly turns a gas into a liquid?
Which process slowly turns a gas into a liquid?
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