Rates of Reaction Flashcards

1
Q

What is the rate of an reaction?

A

The rate of a reaction is how fast a reaction takes place.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the four factors that contribute to the rate of a reaction?

A

Particle Size
Concentration
Temperature
Presence of a Catalyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What happens during a reaction?

A

During a reaction, particles collide to combine and produce new products

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is surface area in a reaction?

A

In a reaction, surface area refers to how spread out the particles are (eg. a powder has high surface area, whereas a stone has low surface area)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the effect of particle size (surface area) on the rate of reaction?

A

The greater the surface area, the more reactions can occur, and thus, the higher the rate of reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is concentration in a reaction?

A

The concentration is the number of atoms present in a reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the effect of concentration on the rate of

reaction?

A

The higher the concentration, the higher the rate of reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the effect of temperature on the rate of

reaction?

A

The higher the temperature, the higher the energy level of the reactants, and thus more reactions that occur. This also means the the rate of reaction is will behigher

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a catalyst in a reaction?

A

A catalyst is a chemical used to speed up a reaction without affecting the end results of the reaction. They are present at the start, and present at the end.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the two types of catalyst?

A

Homogeneous Catalysts

Heterogeneous Catalysts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are two ways of following the course of a reaction?

A

Measuring the volume of gas produced

Measuring the loss in mass over time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the point on a reaction graph called where the line becomes horizontal (levels off)?

A

The End-Point

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the four signs of a chemical reaction?

A

Temperature Change
Colour Change
Effervescence (Gas Produced)
Precipitate (Solid Produced)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the two types of reaction?

A

Exothermic Reaction

Endothermic Reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is an Exothermic Reaction?

A

An Exothermic Reaction is one where energy exits to the surroundings (the overall temperature increases)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is an Endothermic Reaction?

A

An Endothermic Reaction is one where energy enters the surroundings (the overall temperature decreases)