Chemistry Vocabulary

2. – The starting materials in a chemical reaction.
5. – A substance that tastes bitter and can turn red litmus paper blue.
9. – A mixture where one substance is dissolved in another and looks the same throughout.
10. – The part of a solution that gets dissolved.
14. – A tiny particle in the nucleus of an atom with no charge (neutral).
18. – The part of a solution that does the dissolving (usually a liquid, like water).
19. – The smallest building block of matter; everything is made of atoms.
20. – A reaction that gives off heat, making the area feel warmer.
21. Properties – Traits you can observe or measure without changing what it is (like color or melting point).
22. – The new substances made after a chemical reaction.
23. – A substance made when two or more different elements join together chemically.
24. Energy – Heat energy; how fast the particles in a substance are moving.
25. – How much of a substance can dissolve in a solvent.
27. – A reaction between an acid and a base that makes water and a salt.

1. – A mixture where you can see the different parts (like a salad).
3. Properties – Traits that describe how a substance can change into a new substance (like flammability).
4. – A combination of two or more things that aren’t chemically bonded.
6. Table – A chart that shows all known elements, organized by their properties.
7. – Two or more atoms bonded together; it can be the same or different elements.
8. – A mixture that looks the same throughout (like salt water).
11. – A tiny particle in the nucleus of an atom with a positive charge.
12. – A reaction that takes in heat, making the area feel colder.
13. Reaction – A process where substances change into new substances.
15. – How much solute is in a solution compared to the amount of solvent.
16. – A tiny particle with a negative charge that moves around the nucleus of an atom.
17. – A pure substance made of only one kind of atom.
19. – A substance that tastes sour and can turn blue litmus paper red.
26. of Conservation of Mass – A rule that says matter can’t be created or destroyed in a chemical reaction; the amount of mass stays the same before and after the reaction.