1. If there only about 100 types of elements in the world, why are there so many different kinds of matter? 9 8 10 20 30 7 5 2 3 4
180 6 40
130
140 50
120 70 60 1
160
170
110
150 80
100 90
Seconds Left:

2. Elements can combine in many different ways to form many different types of matter.

3. Describe the difference between a mixture and a compound.9 8 10 20 30 7 5 2 3 4
180 6 40
130
140 50
120 70 60 1
160
170
110
150 80
100 90
Seconds Left:

4. Compounds are chemically combined, mixtures are not.

5. Define:
Solute
Solvent
Solution 9 8 10 20 30 7 5 2 3 4
180 6 40
130
140 50
120 70 60 1
160
170
110
150 80
100 90
Seconds Left:

6. Solution – homogeneous mixture where a solute is dissolved in a solvent
Solute – the matter that gets dissolved
Solvent – the matter that does the dissolving

7. Which kind of mixture is sometimes difficult to distinguish from a compound? Why?
This screen will disappear in 3 minutes. 8 7 9 20 6 10 4 2 3
180 5 30
130
120
140 70 50 60 40
160
170 1
150
110
100 90 80
Seconds
Remaining.

8. Homogeneous mixtures because the mixtures are the same throughout

9. Define the terms:
Element
Mixture
Compound
Molecule 9 8 10 20 30 7 5 2 3 4
180 6 40
130
140 50
120 70 60 1
160
170
110
150 80
100 90
Seconds Remaining:

10. ELEMENT – matter made of only one type of atom; a pure substance
MIXTURE – a combination of different types of matter in no fixed proportion; can be physically taken apart
COMPOUND – a combination of different types of matter in specific proportions; must be chemically taken apart
MOLECULE – the smallest part of a compound that has all the properties of that compound