PS.3 Level 2

Which of the following is a physical property that can be used to identify a pure substance?

• Flammability

• Melting point

• Reactivity with acid

• Ability to rust

Tags

VA.PS.3.a

What happens to the properties of a substance when it undergoes a physical change?

• The chemical composition changes

• The physical properties change, but the chemical composition remains the same

• Both physical and chemical properties change

• The substance becomes a different element

Tags

VA.PS.3.b

Which of the following compounds is formed through ionic bonding?

Tags

VA.PS.3.c

• The creation of matter

• The destruction of matter

• The conservation of matter

• The transformation of energy

Tags

VA.PS.3.d

Which of the following is a chemical property that can be used to identify a pure substance?

• Density

• Boiling point

• Reactivity with oxygen

• Color

Tags

VA.PS.3.a

What is the result of a chemical change in a pure substance?

• The substance retains its original properties

• The substance changes its state of matter

• The substance forms a new substance with different properties

• The substance dissolves in water

Tags

VA.PS.3.b

Which of the following is an example of a covalent compound?

Tags

VA.PS.3.c

• Only mass

• Only energy

• Both mass and energy

• Neither mass nor energy

Tags

VA.PS.3.d

Which property would you use to identify a pure substance without altering it?

• Reactivity with water

• Solubility in acid

• Density

• Combustibility

Tags

VA.PS.3.a

What is a key difference between a physical and a chemical change?

• Physical changes alter the chemical composition

• Chemical changes do not alter the chemical composition

• Physical changes are reversible, while chemical changes are not

• Chemical changes result in new substances, while physical changes do not

Tags

VA.PS.3.b