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Chapter 1 Review
Atoms and Molecules
Question | Answer |
---|---|
what is in the nucleus | protons and neutrons |
a mixture in which two or more substances are evenly mixed but not bonded together | homogeneous mixture |
a mixture in which the substances are held together by chemical bonds and act as a unit | heterogeneous mixture |
anything that has mass and takes up space | matter |
a substance made of only one kind of atom | element |
a small particle that is the building block of matter | atom |
substance made of two or more elements that are chemically joined in a specific combination | compund |
two or more atoms that are held together by chemical bonds and act as a unit | molecule |
matter with a composition that is always the same | substance |
gravity ____ matter because it does not have mass and volume | isn't |