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
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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
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4. Compounds are chemically combined, mixtures are not.

5. Define:
Solute
Solvent
Solution 9 8 10 20 30 7 5 2 3 4
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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?
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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
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10. ELEMENT – matter made of only one type of atom
MIXTURE – a combination of different types of substances not chemically combined
COMPOUND – a chemical combination of different types of atoms
MOLECULE – a chemical combination of two atoms