1. Matter Review

2. Question 1
Label physical or chemical
Silver tarnishing
Ice cream melting
Breaking glass
Paper burning

3. Answer
Chemical
Physical

4. Question 2
Name the 4 states of matter discussed in class.
Which has the highest amount of kinetic energy? The Lowest?

5. Solid, liquid, gas, plasma Plasma (higest KE), solids (lowest KE
answers
Solid, liquid, gas, plasma
Plasma (higest KE), solids (lowest KE

6. Draw a molecular level representation of the states.
Question 3
Draw a molecular level representation of the states.

7. Question 4
What method is used for separating homogeneous mixtures by boiling point?

8. answers
Distillation

9. What method separates solids from liquids?
Question 5
What method separates solids from liquids?

10. answers
Filtration

11. Are all mixtures solutions, why or why not?
Question 6
Are all mixtures solutions, why or why not?

12. Solutions are a homogeneous mixtures made with a liquid solvent.
Answers
Solutions are a homogeneous mixtures made with a liquid solvent.
Not all solutions are made with a liquid solvent.

13. What is Kinetic molecular theory?
Question 7
What is Kinetic molecular theory?

14. Answer
matter is made up of tiny particles called atoms that are in constant motion unless their temperature is at Absolute Zero

15. Question 8
When substances are heated what happens to the motion of the particles? Why?

16. Answer
The addition of heat will speed the particles up so KE will increase. According to KMT particle motion and temperature are directly proportional.

17. Question 9 What is the melting point of the substance?
The point labeled 5 has _____________ energy.
Which number indicated the liquid state?

18. Answer
0 ºC
Kinetic 3

19. Question 10 Classify the following as Element, Compound or Mixture.
NaCl
Sand and sugar Cu
Salt water
Sugar
Air

20. Answer
Compound
Mixture
Element

21. Question 11
Classify the following mixtures and Homogeneous (Ho)or Heterogeneous (He)
Salt water
Jello
Supreme Pizza
Windex window cleaner
Tossed salad
Lucky Charms Cereal

22. Answers Ho He

23. Question 12
How would you separate a mixture of sugar and sand?

24. Answer First add water to the mixture The sugar will dissolve
Filter out the sand…sand will be caught in the filter paper
Boil off the water and the sugar will remain.

25. Why are gases compressible?
Question 13
Why are gases compressible?

26. Answer
Gases are compressible due to the large amount of space between the particles. (Indefinite volume)

27. Question 14
What is sublimation?

28. answer
A phase change in which a substance goes from the solid phase directly to the gas phase with the addition of heat/energy.

29. Question 15
What are the types of evidence we look for to indicate that a chemical change has taken place?

30. Answer
Formation of a gas (bubble)
A new substance forms/A precipitate forms
Temperature change

31. Question 16
We classify matter base on what 3 properties?

32. Answer
Amount of energy particles possess
Particle arrangement
Particle spacing