1. Matter Test Review

2. Do you know your atoms?

3. Name the 3 parts of an atom
Electrons Protons Neutrons

4. List the charge for each part:
Electrons are:
Negative
Protons are:
Positive
Neutrons are:
No charge

5. What is inside of the nucleus?
Protons
Neutrons

6. What is outside the nucleus of the atom?
Electrons

7. What is the arrow pointing to?
Electrons on the outside

8. What is the charge of the nucleus?
Positive because protons are positive and neutrons have no charge

9. The atomic mass is the number of protons and neutrons in the nucleus
Protons and neutrons have the mass of 1 amu.
Count protons and neutrons to find the atomic mass
The atomic mass of this atom would be 40 because
20 protons + 20 neutrons = 40

10. What is the atomic mass?
It is 39 because there are 19 protons + 20 neutrons

11. Do you know your elements?

12. You can use the periodic table to find the atomic number of every element

13. The periodic table is organized by the atomic number (# of protons)

14. How many protons does silver have?47

15. Here is a close up of beryllium from the periodic table:
It’s atomic mass is , which means it has an average of protons and neutrons (we’ll get into why it is averaged later)

16. What is the atomic number?17

17. What is the atomic mass?
24.305

18. What is the number of protons?7

19. What is the atomic mass?
35.453

20. Which atom is lithium, with an atomic number of 3?
3 protons
2 neutrons
2 protons
3 neutrons

21. What is the atomic number?12

22. What is the number of protons?17

23. Which atom is helium, with an atomic number of 2?
3 protons
2 neutrons
2 protons
3 neutrons

24. What is the number of protons?4

25. The atomic mass is the number of ______ and ________
Protons and neutrons

26. Which atom is fluorine, with an atomic number of 9?
9 protons
8 neutrons
8 protons
9 neutrons

27. Do you know your phases of matter?

28. What are the 3 states of matter?
SOLID LIQUID GAS

29. When a material is cooled, what happens to the motion of the molecules?
Move slower

30. When energy is added to Liquids and they become a gas quickly, the process is called
BOILING

31. If the gas is trapped and cooled enough to become a liquid, then _________ has occurred.
CONDENSATION