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Q 1/24
Score 0
What is a chemical reaction?
30
Atoms are rearranged.
Atoms are destroyed
Atoms are lost
New atoms are made
Q 2/24
Score 0
Are there energy changes involved in a chemical reaction?
30
Yes
No
24 questions
Q.
What is a chemical reaction?
1
30 sec
Q.
Are there energy changes involved in a chemical reaction?
2
30 sec
Q.
What are chemical reactions that release energy (heat) called?
3
30 sec
Q.
What are chemical reactions that take in energy (heat) called?
4
30 sec
Q.
What are the things reacting in a chemical reaction called?
5
30 sec
Q.
What are the things being produced in a chemical reaction called?
6
30 sec
Q.
If you touch a beaker with an exothermic reaction in it what would you feel?
7
30 sec
Q.
If you touch a beaker with an endothermic reaction in it what would you feel?
8
30 sec
Q.
Combustion (burning) is an example of what type of reaction?
9
30 sec
Q.
Thermal decomposition (breaking down using heat) is an example of what type of reaction?
10
30 sec
Q.
Respiration is an example of what type of reaction?
11
30 sec
Q.
Which types of reactions are more common?
12
30 sec
Q.
When you eat a sherbet you feel a cooling effect because it involves a ________________ reaction.
13
30 sec
Q.
Heat and body warmers release heat. So they make use of ____________________ reactions.
14
30 sec
Q.
Cold packs are used to cool things down, such as injuries when ice packs are not available..They absorb energy from the surroundings so they are __________________ reactions.
15
30 sec
Q.
You can also use ___________ reactions to chill cans of drinks
16
30 sec
Q.
There are hand warmers you can re use and hand warmers you can re use and hand warmers that you can only use once (these ones heat up surroundings for longer).
17
30 sec
Q.
In an _________________ reactions, the reactants have more energy than the products.
18
30 sec
Q.
In an ________________ reaction, the products have more energy than the reactants.
19
30 sec
Q.
The minimum energy needed for colliding reactants to react is called the
20
30 sec
Q.
Bond breaking is an _______________________ process
