Science Quiz on Chemical Reactions and Newton's Laws

In a chemical reaction, the total mass of the reactants is:

• Less than the mass of the products

• More than the mass of the products

• Equal to the mass of the products

• Doubled in the products

Tags

NGSS.MS-PS1-5

What happens to atoms during a chemical reaction?

• They are destroyed

• They are rearranged

• They disappear

• They turn into energy

Tags

NGSS.MS-PS1-5

Which equation supports the Law of Conservation of Mass?

• 2H₂ + O₂ → 2H₂O

• C + O₂ → CO

• H₂O → H + O₂

• CH₄ → C + H

Tags

NGSS.MS-PS1-5

In the equation: CH₄ + 2O₂ → CO₂ + 2H₂O, how many molecules of water are produced?

• 1

• 2

• 3

• 4

If 50 grams of reactants are used, what is the total mass of products?

• 25 grams

• 50 grams

• 75 grams

• 100 grams

Tags

NGSS.MS-PS1-5

A student mixes vinegar and baking soda. The mass before the reaction is 100 g. After the reaction, the mass is 98 g. What most likely happened?

• Atoms were destroyed

• Mass was lost to heat

• Gas escaped

• Matter was created

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is evidence of a chemical reaction?

• A change in shape

• A change in state

• Production of gas

• Melting

Tags

NGSS.MS-PS1-2

A student wants to balance the equation: _H₂ + _O₂ → _H₂O. What is the correct set of coefficients?

• 2, 1, 2

• 2, 2, 2

• 1, 1, 1

• 1, 2, 2

Tags

NGSS.MS-PS1-5

Newton's First Law is also called:

• Law of Force

• Law of Inertia

• Law of Reaction

• Law of Energy

What is the net force if 10 N is applied forward and 4 N of friction acts against it?

• 14 N

• 6 N

• 4 N

• 10 N

Tags

NGSS.MS-PS2-2