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:

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

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:

Compounds are chemically combined, mixtures are not.

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:

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

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.

Homogeneous mixtures because the mixtures are the same throughout

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:

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