Chemistry Quiz 1

2. caused an increase in the amount of oxygen in
5. lowers the amount of activation energy needed to create a chemical reaction
6. vertical on periodical table
8. poisonous gas made from partially burn carbon is called carbon ……
9. removing oxygen
10. an element with a low boiling point is a …….. at average temperatures
11. makes up around 70% of atmosphere
14. elements with the same number of protons and electrons but different numbers of neutrons
20. coloured green on universal indicator
21. if a substance’s a varied boiling or melting point it is .. …
22. diamonds, graphite and fulerenes are made of this

1. group 7 always come in twos because they share an electron
3. group 1 alkaline metals become more ….. as you go down the periodic table
4. group on inert gases in group 0
7. gas….. used to measure small quantities of gase given off in a chemical reaction
12. how you measure the rate of a chemical reaction at between set points
13. conditions affecting the rate of a reaction are temperature, surface are and …..
15. atmosphere over time
16. an an acid + a base => a …… and water
17. elements from the same period number have the same number of electron …….
18. horizontal on periodic table
19. form when two clear solutions form a solid