WorksheetsQuiz 6 review CR
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Jessie is a student chemist who assists Dr. Yung in her lab. While she was working, Jessie added some chlorine gas to a container she thought was empty. After Jessie added the chlorine gas, however, a solid, yellow substance formed in the container. Jessie tested the substance and identified it as sulfur. When Dr. Yung asked Jessie to explain what had happened in the container, she claimed that a chemical reaction had changed the chlorine into sulfur.
Jessie’s Claim: A chemical reaction changed the chlorine into sulfur.
Do you think that Jessie’s claim is correct?
a)
Yes
b)
No
2.
Jessie is a student chemist who assists Dr. Yung in her lab. While she was working, Jessie added some chlorine gas to a container she thought was empty. After Jessie added the chlorine gas, however, a solid, yellow substance formed in the container. Jessie tested the substance and identified it as sulfur. When Dr. Yung asked Jessie to explain what had happened in the container, she claimed that a chemical reaction had changed the chlorine into sulfur.
Jessie’s Claim: A chemical reaction changed the chlorine into sulfur.
Do you think that the container was actually empty before Jessie added the chlorine?
a)
Yes
b)
No
3.
What was in the jar Jessie put the chlorine gas into?
a)
hydrogen sulfide (H2S)
b)
iron sulfide (FeS)
c)
sodium sulfide (Na2S)
d)
hydrogen (H2)
e)
sulfuric acid (H2SO4)
4.
Which Claim was correct?
a)
Claim 1: During the chemical reaction, only the rust was produced.
b)
Claim 2: During the chemical reaction, the rust and another substance were produced.
5.
Based on these atomic-scale models, what other substance could be in the water besides rust?
a)
Sodium nitrite
b)
Potassium chromate
c)
Both
d)
Neither
6.
During a chemical reaction, atoms cannot be created or destroyed.
a)
True
b)
False
7.
What is the science definition of Product?
a)
An ending substance that is made during a chemical reaction
b)
A starting substance that is part of a chemical reaction
c)
Something a company makes to make money
d)
An object, diagram, or computer program that helps us understand something by making it simpler or easier to see
8.
During a chemical reaction, one or more starting 1._____________ change into one or more different 2._____________.
a)
1.rearrange 2. chemical reactions
b)
1. reactants 2. products
c)
1. products 2. reactants
d)
1. properties 2. models
9.
What is the science definition of Reactant?
a)
An ending substance that is made during a chemical reaction
b)
When two substances have different colors
c)
A starting substance that is part of a chemical reaction
d)
An object, diagram, or computer program that helps us understand something by making it simpler or easier to see
10.
In the city of Westfield what was the red substance in the water?
a)
Clothing dye from people washing there clothes wrong
b)
Iron oxide also known as rust
c)
Fertilizer
d)
Pipe substance
11.
During a chemical reaction, all of the atoms that make up the 1._____________ rearrange to form the 2.___________.
a)
1. chemicals 2. atoms
b)
1. reactants 2. products
c)
1. items 2. other items
d)
1. products 2. reactants
12.
Is burning a type of chemical reaction?
a)
Yes
b)
No
13.
Which claim is correct?
What happens to the atoms of a substance when it burns?
a)
Claim 1: All of the atoms are destroyed.
b)
Claim 2: All of the atoms rearrange to form a different substance or different substances.
c)
Claim 3: Some of the atoms are destroyed, and some of the atoms rearrange to form a different substance or different substances.
14.
Can atoms be destroyed?
a)
Yes
b)
No
c)
Sometimes
d)
Every time a chemical reaction happens
15.
Mrs. Lenzi said in class which of these 3 things about what to do after school?
a)
1. Stay on campus 2. leave whenever you want 3. Hang out at dollar tree
b)
1. If you leave school and get in trouble its not the schools problem 2. Leave right after school 3. Starbucks wants you hanging out at there shop
c)
1. Go home and do not hang out on campus 2. Local businesses do not want you at their stores 3. You will receive consequences for inappropriate behavior to and from school
d)
1. Go home 2. Stop at dollar tree on the way home 3. It is okay to act inappropriate on your way home from school
16.
When is it okay to physically touch another student at school?
a)
Only when hugging
b)
When you are friends with the person and they say its okay
c)
Only on certain days
d)
It is never okay to be physically touching another student at school
17.
What is an Endothermic reaction?
a)
it is a reaction where the energy in an object disappears form existence
b)
it is a reaction that takes in energy from its surroundings and stores the energy away
c)
it is a reaction that releases stored energy
d)
it is a reaction that can only happen on certain planets in our solar system
18.
What is an Exothermic reaction?
a)
it is a reaction where the energy in an object disappears form existence
b)
it is a reaction that takes in energy from its surroundings and stores the energy away
c)
it is a reaction that releases stored energy
d)
it is a reaction that can only happen on certain planets in our solar system
19.
Would you be able to get energy from your food if there weren't chemical reactions in your body?
a)
Yes
b)
No
c)
Maybe
20.
Which one of these models shows what happens when you burn ethanol?
a)
1
b)
2
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