Luke´s Crossword

3. A process that changes substances into new substances.
5. An element or compound (related words: chemist
7. The amount of matter in an object.
8. Material that has mass and takes up some amount of space.
10. A pure substance that is formed when two or more different elements combine.
12. A strong feeling of friendship
14. A combination of substances that can be physically separated from one another.
15. The smallest unit of an element that has the properties of that element.
16. The substances that are formed during a chemical reaction.
17. The transfer of thermal energy.
18. The ability to do work.

1. The amount of space that an object occupies, measured in liters or centimeters cubed.
2. A pure substance that cannot be broken down into simpler substances by chemical reactions.
4. The ability of molecules of the same substance to stick together.
6. The substances present before a chemical reaction occurs.
9. Chemical reaction that gives off heat energy.
11. Two or more atoms joined together.
13. A measure of the average Kinetic energy of the atoms in a system, used to express thermal energy in the degrees.