List All 5 Separation Techniques

Name______Date______Hour______

Study Guide

Directions: This study guide has been created to help you as you study. Please fill it out in its entirety. Make sure you show all work were applicable.

Separation Techniques (Section 3.3)

List all 5 separation techniques:

1. ______

2. ______

3. ______

4. ______

5. ______

Define the following:

Filtration:______

Distillation:______

Chromatography:______

Crystallization:______

Sublimation:______

Helpful Hints about Separation: Directions: fill the blanks with the appropriate words.

Filtration is an ideal separation technique for separating ______and ______solids.

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Distillation can be used to separate substances with a different ______points; such as, a ______solid and a liquid.

Chromatography is good at separating two ______from one another, or two gases from one another. It draws the mixture through a solid (usually special paper), which causes the components of the mixture to move at different ______.

Sublimation is often used to separate two ______, when one of them can be sublimated but the other cannot.

Crystallization can be used to separate a liquid and a ______solid, either by adding a little extra of the solid, or by evaporating the ______.

Scenario Problems Directions: Match each scenario to one separation technique:

1. ______Alcohol and water A. Filtration

2. ______Sand and water B. Chromatography

3. ______Pure sugar from a C. Sublimation solution D. Distillation 4. ______Components of ink E. Crystallization 5. ______Mothballs and sand

Complex Scenario Problems Directions: Read each scenario and determine what techniques you need to use to separate the mixtures. Make sure you each technique you use, what you are starting with, and what the end product is after the technique.

The Three Laws (Section 3.2 and 3.4)

List the three laws:

1. ______

2. ______

3. ______

The Law of Conservation of Mass (Section 3.2)

Define the law:______

Formula: massreactants = ______products

Helpful Hints: Directions: fill the blanks with the appropriate words.

If you are given two ______, then you would ______them together in order to find the products’ ______.

If you are given one reactant’s mass, and the products’ mass, you should ______them in order to find the other ______mass.

Scenario Problems Directions: Solve the problems step by step.

1. Sodium reacts with chlorine to produce sodium chloride. If 43.6g of sodium react with 10.2g of chorine, how much sodium chloride is produced?

Given: Formula:

Substitution: Answer:

2. If you are given 30.7g of sodium chloride and 12.6g are chlorine, how many grams of sodium do you have?

Given: Formula:

The Law of Definite Proportions (Section 3.4)

Formula:

Elements will only have ______name (example: cobalt) and will only have ______uppercase letter when they are abbreviated (example: Co). Compounds have ______names (example: carbon dioxide) and will have ______uppercase letter when they are abbreviated (example: CO).

You should only use this formula is you see a percent (%) symbol in the problem, or if the problem asks for you to find the ______mass of component in a compound.

Scenario Problems Directions: Solve the problems step by step.

3. A 57.0 g sample of an unknown compound contains 11.5 g of oxygen. What is the percent by mass of oxygen in the unknown compound? Given: Formula:

4. A 73.0 g sample of an unknown compound contains 12.9 g of hydrogen. What is the percent by mass of hydrogen in the compound?

Given: Formula:

5. A 134.50 g sample of aspirin is made up of 6.03 g of hydrogen, 80.70 g of carbon, and 47.77 g of oxygen. What is the percent by mass of each element in aspirin? Given: Formula:

6. A sample of sodium chloride has a mass of 92.5g. The sample is 52.7% sodium. How many grams of sodium does this sample contain? Given: Formula:

The Law of Multiple Proportions (Section 3.4)

Formula:

Is used when you want to be able to ______elements from two different compounds. Answers will always be expressed in ______whole numbers.

Complex Scenario Problems: Directions: Solve the problems below. You will need to use multiple laws in order to solve these.

7. If 11.1 g of hydrogen reacts completely with 88.6 g of oxygen to form hydrogen peroxide, what is the percent by mass of hydrogen in hydrogen peroxide? Given: Formula:

8. A 57.6 g sample of methane (CH4) is found to contain 43.2 g of carbon. How much hydrogen (in grams) would a 37.8 g sample of methane contain? Given: Formula:

9. Two unknown compounds are tested. Compound I contains 35.0 g of hydrogen and 420.0 g of oxygen. Compound II contains 8.0 g of hydrogen and 332.0 g of oxygen. Are the compounds the same? Given: Formula:

Properties of Matter (Section 3.1)

List and define the 3 states of matter:

1. ______2. ______3. ______

Name the 2 types of mixtures and define:

1. ______2. ______

What is the difference between a chemical, physical, and phase change?

______

Let me know if you have questions!

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