CI10 Limiting Factors

This is needed in order for a chemical reaction to take place.

• Reactants

• Products

• Energy

• Liquid

Tags

NGSS.HS-PS1-5

A reaction that gives off energy is called

• exothermic

• endothermic

• indothermic

• gives off energy

Tags

NGSS.HS-PS1-4

A reaction that takes in energy is called

• exothermic

• endothermic

• indothermic

• takes in energy

Tags

NGSS.HS-PS1-4

Energy _____ be created or destroyed.

• can

• cannot

Tags

NGSS.MS-PS3-5

In an exothermic reaction, where is the energy?

• Stored in the bonds of the products.

• In the air surrounding where the reaction takes place.

• In the liquid of the chemical reaction.

• Contained in the bonds of the reactants.

Tags

NGSS.HS-PS1-4

In an endothermic reaction, where is the energy?

• Stored in the bonds of the products.

• In the air surrounding where the reaction takes place.

• In the liquid of the chemical reaction.

• Contained in the bonds of the reactants.

Tags

NGSS.HS-PS1-4

Which of these DO NOT change the rate of reaction?

• temperature

• surface area

• color of the substance

• inhibitors or catalysts

• concentration

Tags

NGSS.HS-PS1-5

What is a closed system?

• A system in which matter flows freely.

• A system in which matter cannot exit or enter.

• A system in which gases can get in and out, but liquids and solids cannot.

• A system in which the mass of the matter is able to change.

Tags

NGSS.HS-PS3-4

What happens to atoms during a chemical reaction?

• They are created.

• They are destroyed.

• They are doubled.

• They are rearranged.

Tags

NGSS.HS-PS1-7

A chemical reaction takes place in a closed system. The mass of the starting substances is 50 grams. What is the mass of the ending substances?

• 50 grams

• 40 grams

• 25 grams

• More information is needed.

Tags

NGSS.HS-PS1-7