Workbook Topic 6 Flashcards Preview

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Flashcards in Workbook Topic 6 Deck (23):
1

The reaction of the gummy bear in the test tube produces a lot of heat. Before the gummy bear is tossed into the test tube, potassium chlorate (KClO3) is heated to produce KCl and O2. Consider thee following materials and compounds and identify what is the system and what is the surroundings:

a) KCl

b) O2 in test tube

c) oxygen in room

d) the test tube

e) KClO3 

a) system

b) system

c) surroundings

d) surroundings

e) system

2

Energy goes into the system is what kind of reaction?

Endothermic

3

Energy going out of the surroundings is what kind of reaction?

Endothermic.

4

Energy of the system going up is what kind of reaction?

Endothermic

5

Energy of surroundings going down is what kind of reaction?

Endothermic

6

Change in PE is positive is what kind of reaction?

Endothermic

7

Beaker getting cold is what kind of reaction?

Endothermic

8

Heat as a product is what kind of reaction?

Exothermic

9

Energy going out of the system is what kind of reaction?

Exothermic

10

Energy going into the surroundings is what kind of reaction?

Exothermic

11

Energy of the system going down is what kind of reaction?

Exothermic.

12

Energy of surroundings goes up is what kind of reaction?

Exothermic.

13

Change in PE is less than 0

Exothermic

14

Beaker getting hot is what kind of reaction?

Exothermic

15

F2 → 2F

Is a bond broken or formed?

Broken

16

F2 →2F 

Change in enthalpy positive or negative?

Positive

17

F2 → 2F

Change in PE positive or negative?

Positive

18

F2 → 2F

Surroundings get hot or cold?

Cold

19

2F → F2

Bonds broken or formed?

Formed

20

2F → F2

Change in enthalpy positive or negative?

Negative.

21

2F → F

Change in PE positive or negative?

Negative.

22

2F→F2

Surroundings hot or cold?

Hot

23

When trying to determining the change in enthalpy of a bond in a molecule with 4 identical bonds what should your coeffieceint be for your x variable?  

4

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