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science
Question | Answer |
---|---|
melting | the process of changing matter from a solid to a liquid by adding heat energy |
freezing | the process of changing matter from a liquid to a solid by taking away heat energy |
boiling point | the temperature at which a liquid changes to a vaper or gas |
melting point | the temperature at which a solid becomes a liquid |
molecule | a group of two or more atoms linked together by sharing electrons in a chemical bond |
volume | the amount of space an object takes up |
physical change | a change that occurs when chemical bonds are broken an example is fire a chemical change can not be reversed |
matter | anything that takes up space |
mass | the concentration of matter in a object |