Pre-AP Review

Which of the following is a sign that a chemical reaction has occurred?

• change in shape

• melting

• formation of a gas

• dissolving

Is melting butter for popcorn a chemical or physical change?

• chemical

• physical

What elements are present in the compound : CHNaO₃

• 3 Carbon, 3 Hydrogen, 3 Sodium, 3 Oxygen

• 1 Carbon, 1 Hydrogen, 1 Sodium, 1 Oxygen

• 1 Carbon, 1 Hydrogen, 1 Sodium, 3 Oxygen

• Non of these

How much force is needed to accelerate a 3kg skateboard at 5m/s^2.

• 8N

• 1.6N

• 0.6N

• 15N

How much force is needed to accelerate a 25kg bowling ball at 2m/s².

• 50N

• 5N

• 12.5N

• 100N

If a 2kg bird is pushed by the wind with a force of 2N, how fast does the bird accelerate?

• 1 m

• 2 m/s²

• 4m/s²

• 1 m/s²

What is the magnitude (size) and direction of the net force?

• 14 N Down

• 14 N Up

• 6 N Up

• 6 N Down

What is the net force?

• 17 N Right

• 3 N Right

• 3 N Left

• 17 N Left

Which direction will the object move?

• Up

• Down

• Right

• Left

What is the formula for force?

• F=M/A

• F=A/M

• F=M*A

• F=M*F