Lesson 4 ELEMENT,MIXTURE, AND COMPOUND

1. The flammability of a substance is 

• A. a chemical property.
• B. related to the density
• C. a physical property.-
• D. changeable.

Tags

NGSS.HS-PS1-1

2.. The particles in both a solution and a colloid can

• A. scatter light.
• B. settle out.
• C. be soluble
• D. pass through a fine filter.

Tags

NGSS.MS-PS4-2

3. 1.  What is formed when particles of two or more substances are distributed evenly among each other?

• A. compound      
• B. suspension     
• C. solution
• D. element

4. 1.  What is a pure substance made of two or more elements that are chemically combined called?

• A. element
• B. compound      
• C. mixture
• D. solution

5. When materials combine to form a mixture, they

• A. keep their original properties.
• B. react to form a new substance with new properties.
• C. combine in a specific ratio.
• D. always change their physical state.

6. When elements form mixtures, the elements

• A. keep their original properties.
• B. react to form a new substance with new properties.
• C. combine in a specific mass ratio.
• D. always change their physical state.

7.  1.  If a spoonful of salt is mixed in a glass of water, what is the water called?

• A. solute
• B. solution
• C. solvent
• D. element

8. How is a compound different from a mixture?

• A. Compounds have two or more components.
• B. Each substance in a compound loses its characteristic properties.
• C. Compounds are commonly found in nature.
• D. Solids, liquids, and gases can form compounds.

9.. The particles in both a suspension and colloid can 

• A. scatter light.
• B. settle out.
• C. be soluble.
• D. pass through a fine filter.

10. A colloid has properties of both suspensions and ______.

• A. solutions.
• B. solvents.
• C. solutes
• D. nonmetals