1. Physical Science
Mixtures

2. mixture A ______________________ is a physical combination of
substances. Snack mix is an example of a mixture. The
substances in a snack mix remain the same even though they
are close together.

3. heterogeneous
2. Mixtures like snack mix that have different parts you can plainly see are called ___________________________.

4. suspension
3. A _________________ is another type of heterogeneous mixture that requires you to look under a microscope. Over time, one or more parts of a suspension will settle to the bottom like mud in a stream. Other examples include salad dressings, orange juice, and medicines.

5. colloid, colloids
4. A __________________ is a heterogeneous mixture like a suspension, expect its parts do not settle. The suspened particles are just small enough not to layer out. Smoke, mayonnaise, and foam are examples of __________________.

6. homogeneous
5. A ________________________ mixture is a mixture that you
cannot see the individual parts.

7. solution
6. A ___________________ is a homogenous mixture with parts that blend so that it looks the same everywhere, even under a microscope. Solutions can be made with solids, liquids, and gases. Many common household products are solutions: window cleaner, bleach, vinegar, and carbonated beverages.

8. solute
7. The smaller amount that is dissolved in a solution is called the
_____________.

9. dissolves, solvent
8. The larger amount that ________________ the other substance is called the _________________.

10. alloy 9. An _________________ is a solution of a metal and another
solid (often another metal.).

11. solubility
10. The maximum amount of a solute that can dissolve in a solvent is called the _______________________.

12. temperature
11. Solubility often depends on ______________________. Many substances, but not all, become more soluble at high temperatures.

13. water
12. Solubility can be given for many solvents, but _________________ is often called the universal solvent because it can dissolve many things.

14. physical methods
13. The parts of mixtures can be separated using _______________ _______________. Physical methods separate the parts of a mixture without changing the properties or identities.

15. Magnetism
14. ______________________ can be used to separate iron filings or other items that are magnetic.

16. Sifting 15. ______________________ can be used to
separate materials of different sizes. A sieve or strainer can be used to separate small and large particles.

17. Filtration **Add to outline. ______________________ can be used to
separate sand from water.

18. Flotation
16. ______________________ is a method to separate items with different densities, such as wood chips from water.

19. Evaporation 17. ______________________ can be used to
separate salt from water by boiling the water and allowing the water to evaporate, leaving the salt behind.

20. Distillation, vaporization
18. ___________________________ separates the parts of a
mixture by _________________and condensation.

21. gas 19. When a mixture of salt and water are heated, the
water will change to ____________ leaving the
salt in the container. If the water vapor (gas) is condensed
in a cooling tube, it becomes water again that is free of all
salt.