Chapter 5

3. A ___________ mixture has parts that are so evenly mixed that they are difficult to see and separate.
4. A force of attraction between two atoms
5. The basic particle from which all elements are made
6. A characteristic of a substance that describes its ability to change into different substances is a ________ property.
7. Energy that is stored in chemical bonds.
8. the study of matter and how matter changes
9. When the form or appearance of matter is altered but it is not changed into a new substance.
11. Uses numbers and symbols to show the ratio of elements in a compound.
15. A change in matter that produces one or more new substances.
18. A measure of how hot or cold something is based on the average energy of motion of the particles.
20. The amount of matter in an object.
22. anything that has mass and takes up space
23. A group of two or more atoms held together by chemical bonds.
25. A measure of the amount of mass in a given volume.

1. The amount of space that matter occupies.
2. A _________ mixture has parts that are easily seen and separated.
6. The law of ______________ states that matter is not created or destroyed during a chemical or physical change.
10. a single kind of matter that is pure, meaning it always has a specific chemical composition
12. A(n) ___________ change absorbs energy.
13. The total energy of motion of all the particles in a substance.
14. a characteristic of a substance that can be observed without changing it into another substance is a _______ property.
16. Two or more substances that are in the same place, but not chemically bonded together.
17. A substance that cannot be broken down into any other substances by chemical or physical means.
19. A(n) ____________ change releases energy.
21. A substance made of two or more elements that are chemically combined in a set ratio.
24. A measure of the force of gravity acting on an object.