Science

2. – To test and decide how good or useful something is.,
3. - A chemical reaction that releases heat energy (Reaction gets hot to the touch),
4. - A number in front of a chemical formula in a balanced equation, indicating the number of molecules involved.,
7. A substance that is formed in a chemical reaction. ,
8. - a limit or restriction that the design must follow. It tells you what you cannot do or what conditions you must work within. ,
11. - A chemical reaction that absorbs heat energy (Reaction gets cold to the touch),
14. - To make the best use of a situation, opportunity, or resource.,
16. A substance that readily allows for flow of electricity ,
17. - A substance that speeds up a chemical reaction.,
18. - An initial creation of a product that demonstrates its usefulness,
19. Energy - The minimum amount of energy needed to start a chemical reaction.,

1. – When you give up one thing to get something else.,
5. A substance that does not readily allow for flow of electricity.
6. A system in which energy can be lost to the environment. ,
9. – A smaller or simpler version of something that shows how it works.,
10. - A small number written below an element symbol in a chemical formula, indicating the number of atoms of that element.,
12. - the standards or requirements that a design or solution must meet in order to be considered successful. Or, the rules or goals your design must follow or achieve.,
13. A substance that participates in a chemical reaction. ,
15. – A new or improved idea, method, or device.,
16. A system in which energy cannot be lost to the environment. ,