questions based on chemistry
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| what makes a substance pure | a substance is pure if it is made of only type of atom or molecule.
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| what is an element | elements are one type of atom.
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| what is a compound | compounds are two or more elements together.
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| what is mass | a measurement of how much matter is in an object.
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| what is weight | weight is the measure of the force of gravity on an object.
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| what is the difference between mass and weight | mass does not change. weight changes if the force of gravity changes.
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| what is the international system of units | units that all scientist use. SI
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| What is volume. | how much space matter takes up
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| density | how much mass is in an object D= M/v
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| What is a physical change | A change in matter that does not change the substances make up.
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| chemical change | a change to matter that makes a new substance. This does change the substance's makes up
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| temperature | a measure of the average energy in an object.
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| thermal energy. | measures the total amount of energy.
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| endothermic change | takes in energy
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| exothermic change | releases energy
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Created by:
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