Speed of Reaction

Speed of Reaction

10th Grade

12 Qs

quiz-placeholder

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Speed of Reaction

Speed of Reaction

Assessment

Quiz

Chemistry

10th Grade

Medium

Created by

Lay Thio

Used 16+ times

FREE Resource

12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

True of false?

Speed of reaction refers to how fast the reactants are used up in a reaction or how fast the products are formed in a reaction.

TRUE

FALSE

2.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

We can measure the speed of reaction by measuring the

mass of reactants remaining in a period of time

size of the solid reactant remaining

time taken for a reaction to be completed

volume of gas produced in a period of time

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which factors affect the speed of a reaction?

concentration

particle size

temperature

all of these

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An increase in temperature causes the reacting particles to ......

lose energy and move slower; hence decreasing frequency of effective collisions.

gain energy and move faster; hence increasing the frequency of effective collisions.

lose energy and move faster; hence increasing the frequency of effective collisions.

gain energy and move slower, hence decreasing the frequency of effective collisions.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does a lower concentration of reactant decrease the rate of reaction?

it decreases the number of particles per unit volume, hence decreases the frequency of effective collisions

it lowers the activation energy, hence decreases the frequency of effective collisions

it lowers the energy of the colliding particles, hence decreases the frequency of effective collisions

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When mixed with dilute acid, magnesium powder reacts faster than magnesium strip because

smaller particles have smaller surface area.

smaller particles have larger surface area.

small and large particles have the same surface area.

Media Image

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

When pressure is increased, what happens to the particles of a gas?

The particles spread further apart and decreases the frequency of effective collisions.

The paricles spread further apart and increases the frequency of effective collisions.

The particles are forced closer together and increases the frequency of effective collisions.

The particles are forced closer together and decreases the frequency of effective collisions.

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