Chemical Reactions & Forces

Is this equation balanced?

• Yes

• No

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of chemical reaction involves two or more substances combining to form a new compound?

• Decomposition

• Synthesis

• Single displacement

• Double displacement

Which equation is balanced correctly?

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

According to Newton's first law of motion, what will happen to an object at rest if no external force acts on it?

• It will move at a constant velocity.

• It will accelerate.

• It will remain at rest.

• It will decrease in mass.

Which of the following best describes frictional force?

• A force that always acts to accelerate objects.

• A force that opposes the relative motion between two surfaces in contact.

• A force that increases the velocity of moving objects.

• A force that acts perpendicular to the surface of contact.

What is the primary cause of gravitational force according to Newton's theory of gravity?

• The charge of an object

• The mass of an object

• The color of an object

• The temperature of an object

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which type of chemical reaction involves a single compound breaking down into two or more simpler substances?

• Synthesis

• Decomposition

• Combustion

• Double displacement

Newton's third law states that for every action, there is:

• An equal force in the same direction.

• A less intense reaction in the opposite direction.

• An equal and opposite reaction.

• No reaction unless acted upon by another force.

Tags

NGSS.MS-PS2-1

What happens to the gravitational force between two objects if the distance between them is doubled?

• It quadruples.

• It halves.

• It remains the same.

• It is reduced to a quarter.

In a double displacement reaction, what occurs between the reactants?

• Electrons are shared.

• Protons are exchanged.

• Ionic bonds are formed between different pairs of ions.

• Covalent bonds are broken and reformed.