Ch. 3 Matter Properties and Changes

Multiple Choice

Does the chemical composition of ice change when it melts?

• Yes

• No

Multiple Choice

What is the difference in gas and vapor?

• Gas is a general state of matter; vapor is a specific type of gas that comes from a liquid or solid.
• Gas is a liquid state of matter, while vapor is a solid state.
• Vapor can exist at any temperature, while gas cannot.
• Gas is always visible, while vapor is invisible.

Multiple Choice

How do intensive and extensive properties differ?

• Intensive properties are independent of the quantity of matter, while extensive properties depend on the quantity of matter.
• Intensive properties depend on the quantity of matter while extensive properties do not.

Multiple Choice

Which of the following terms does not signify a chemical change?

• Rotting

• Oxidation
• Combustion
• Melting

Multiple Choice

Which of the following is evidence of a chemical change?

• Melting of ice
• Dissolving sugar in water
• Color change, gas production, or formation of a precipitate.
• Breaking a glass

Multiple Choice

If 10 g of red mercury (II) oxide is heated until 9.26 g of liquid mercury remain, how much oxygen was produced in the reaction?

• 1.5 g
• 2.3 g
• 0.5 g
• 0.74 g

Multiple Choice

Is lemonade made from powder drink mix a heterogeneous or homogeneous mixture?

• Heterogeneous

• Homogeneous

Multiple Choice

Is fresh squeezed lemonade with pulp a heterogeneous or homogeneous mixture?

• Heterogeneous

• Homogeneous

Multiple Choice

How do elements and compounds differ?

• Elements can be made of multiple types of atoms; compounds cannot.
• Elements are always gases; compounds are always solids.
• Elements and compounds are both made of molecules but differ in size.
• Elements consist of one type of atom; compounds consist of two or more types of atoms chemically bonded.

Multiple Choice

What are the rules for chemical symbols?

• 1. One or two letters long; 2. First letter capitalized; 3. Second letter lowercase (if present)

• Can represent compounds instead of elements
• All letters must be uppercase
• Must be three letters long