CHEM-test-cumulative Unit 2&3 at semester

A mixture that is NOT evenly distributed is called ....

• Compounded

• Homogenous

• Heterogenous

• Saturated

Are made from a combination of 2 or more elements that are chemically combined.

• Molecules

• Pure Substances

• Compounds

• Elements

This picture represents: 

• Element
• Compound
• Mixture of Elements
• Mixture of Compounds

This picture represents: 

• Element
• Compound
• Mixture of Elements
• Mixture of Compounds

This picture represents which of the following?

• element
• compound
• mixture

Which picture(s) represents a pure substance? 

• 1 and 2

• 1 and 3

• 2 and 3

• 1, 2 and 3

Matter is divided into two main groups: _______ and _______

• elements and compounts

• compounds and mixtures

• mixtures and elements

• mixtures and pure substances

The two types of pure substances are ____ and ____

• homogeneous and heterogeneous

• elements and compounds

• mixtures and compounds

• elements and atoms

What is the molarity of a 0.5L sample of a solution that contains 1.50 moles of sodium hydroxide (NaOH)

• 0.8 M

• 1.5M

• 3.0M

• 0.3M

A student is preparing solutions for a laboratory experiment by dissolving solid solutes in liquid solvents. Which action will increase the rate of solubility

• lowering the temperature of the solvent

• stirring the solute in the solution

• increasing the pressure on the solution

• increasing the particle size of the solute