Mixing matter

1. a change in the chemical makeup of a substance
3. being at the point at which no more of a liquid, solid, or gas can be absorbed by a solution at a given temperature
4. a mixture of a liquid and a solid in which the solid does not dissolve
6. a mixture in which the atoms of a solid separate and become invisible in a liquid
8. a change in the size, shape, or color of a substance that does not change it into a different substance
11. to become mixed or joined, or to mix or join things together
12. the positively charged central region of an atom, consisting of protons and neutrons, and containing most of the atom’s mass
14. particles that are part of an atom and that orbit the nucleus; they have a negative electrical charge
18. the smallest parts of a substance that can exist by themselves, made of two or more atoms
20. particles in the nucleus of an atom that have no electrical charge

2. a process in which one substance is changed to another
5. a combination of two or more elements
7. anything that takes up space and has weight
9. how much of a substance is present in a solution
10. a number, letter, or sign that is used instead of the name of a chemical substance, another number, etc.
13. combinations of substances in which chemical reactions do not occur
15. substances that cannot be broken down into simpler substances
16. connections between atoms that are joined together to form a molecule
17. tiny particles that are part of the nucleus of an atom; they have a positive electrical charge
19. the smallest parts of an element