Exploring Matter and Solutions Quiz

What is the main difference between an element and a compound?

• Elements are made of molecules, while compounds are made of atoms.

• Elements consist of only one type of atom, while compounds consist of two or more types of atoms.

• Elements can be broken down into simpler substances, while compounds cannot.

• Elements have chemical formulas, while compounds do not.

Which of the following is a chemical formula for a compound?

• O

• N

• He

• 6

• 12

• 18

• 24

• 1

• 2

• 3

• 4

Which of the following is an example of a physical change?

• Burning wood

• Rusting iron

• Melting ice

• Baking a cake

Which process represents a chemical change?

• Dissolving sugar in water

• Freezing water into ice

• Digesting food

• Cutting paper

In an aqueous solution, what is the term for the substance that is dissolved?

• Solvent

• Solute

• Solution

• Concentrate

What happens to the concentration of a solution when more solvent is added?

• The concentration increases.

• The concentration decreases.

• The concentration remains the same.

• The concentration doubles.

Which factor does NOT affect the rate of dissolution of a solid solute in an aqueous solution?

• Temperature

• Surface area

• Agitation

• Color of the solute

How does increasing the temperature affect the rate of dissolution of a solid solute?

• It decreases the rate.

• It increases the rate.

• It has no effect.

• It stops the dissolution.