reaction rates

reaction rates

9th Grade

•

22 Qs

quiz-placeholder

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reaction rates

reaction rates

Assessment

Interactive Video

•

Science

•

9th Grade

•

Hard

•
NGSS
HS-PS1-5, HS-PS1-4

Standards-aligned

Created by

Antonia Walser-Childs

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22 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a characteristic of homogenous mixtures?

The components can be easily separated by physical means.

The composition is uniform throughout the mixture.

The mixture has visibly distinguishable components.

The mixture settles upon standing.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a solute in a solution?

The component that is present in the largest amount.

The component that dissolves the other component.

The component that is dissolved in the solvent.

The component that increases the boiling point of the solution.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a characteristic of heterogeneous mixtures?

They have a uniform composition.

They cannot be separated into their components.

They have visibly distinguishable components.

They are always liquid.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of chemical reactions release energy in the form of heat?

Exothermic

Endergonic

Endothermic

Exergonic

Tags

NGSS.HS-PS1-4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of chemical reactions absorb energy in the form of heat?

Exothermic

Endergonic

Endothermic

Exergonic

Tags

NGSS.HS-PS1-4

6.

MATCH QUESTION

5 mins • 10 pts

Match the following Reaction Rate affect with the definition of why it speeds up reactions.

Pressure

Higher amounts of this of this leads to more frequent collisions between reactant particles

Surface Area

The more of this causes there to be more room for the particles to collide and react with one another

Concentration

The higher the ____ = the smaller of the volume, causing more particle collisions

Temperature

This substance speeds the reaction rate by lowering the activation energy needed to start the reactions

Catalyst

The higher the ______, the faster the reaction because more particles are moving and colliding, thus contacting with each other to react.

Tags

NGSS.HS-PS1-5

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

List four factors that affects the rate of a reaction

temperature

concentration

surface area

volume

catalysts

Tags

NGSS.HS-PS1-5

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