Unit 4: Mixtures and Solutions Review

1. Determine if the image below is a pure substance or a mixture.

• pure substance
• mixture

2. Determine if the image below is a pure substance or a mixture.

• pure substance
• mixture

3. Determine if the image below is a pure substance, homogenous mixture or heterogenous mixture.

• pure substance
• homogenous mixture
• heterogenous mixture

4. Determine if the image below is a pure substance or a mixture.

• pure substance
• mixture

5. Consider a mixture consisting of sand in salt water. This mixture could be separated into its three components of sand, salt and water by first _____ the mixture and then _____ the remaining mixture.

• distilling, evaporating
• distilling, filtering
• filtering, distilling
• evaporating, filtering
• evaporating, grinding

6. Why is water considered to be the universal solvent?

• It contains hydrogen
• It is capable of dissolving more substances than any other liquid
• It contains metallic bonds
• It is magnetic

7. How are compounds created?

• physical change
• chemical change

8. What is two or more substances (elements or compounds) that are physically blended but but are not chemically bonded to one another?

• mixture
• compound
• element
• synthesis

9. Determine if the image below is an element, compound or mixture.

• element
• compound
• mixture

10. A mixture in which the substances that make up the mixture are not evenly mixed is known as a heterogeneous mixture. Which of the following is this type of mixture?

• sprite
• trail mix
• table salt
• brass