WorksheetsFinal review CR
Total questions: 45
Worksheet time: 45mins
Name
Class
Date
1.
Oh no!!!
The person across from you spills a container of an unknown substance on the table!!
They see Mr. Dake did not notice and quickly clean it up. Its extremely obvious to you that they don't plan on telling Mr. Dake
Which safety Guideline should you follow?
a)
9
b)
1
c)
2
d)
3
e)
4
2.
Scale in science means?
a)
The object you weigh yourself on
b)
It's what fish have on there sides
c)
Something that is made of all the same atoms or groups of atoms
d)
The relative size of things
3.
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
4.
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
5.
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
6.
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)
7.
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.
8.
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
9.
During a chemical reaction, atoms cannot be created or destroyed.
a)
True
b)
False
10.
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
11.
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
12.
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
13.
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
14.
Is burning a type of chemical reaction?
a)
Yes
b)
No
15.
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.
16.
Can atoms be destroyed?
a)
Yes
b)
No
c)
Sometimes
d)
Every time a chemical reaction happens
17.
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
18.
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
19.
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
20.
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
21.
Which one of these models shows what happens when you burn ethanol?
a)
1
b)
2
22.
The diagram above shows the repeating groups of atoms that make up two samples. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)
a)
The properties will likely be different because the repeating groups of atoms that make up each sample are different.
b)
The properties will likely be different because there are more repeating groups of atoms in Sample 2.
c)
The properties will likely be the same because the repeating groups of atoms that make up the two samples have the same number of atoms.
d)
The properties will likely be the same because the repeating groups of atoms that make up the two samples have two of the same types of atoms.
23.
The diagram above shows the repeating groups of atoms that make up two samples. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)
a)
The properties will likely be different because the repeating groups of atoms that make up each sample are different.
b)
The properties will likely be different because there are more repeating groups of atoms in Sample 1.
c)
The properties will likely be the same because the repeating groups of atoms that make up the two samples have one of the same types of atoms.
d)
The properties will likely be the same because the repeating groups of atoms that make up the two samples have the same number of atoms.
24.
The diagram above shows the repeating groups of atoms that make up two samples. Both samples are green gases at room temperature. Will the other properties of the two samples be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)
a)
The other properties will be the same because the repeating groups of atoms that make up the two samples are the same.
b)
The other properties will be different because there are more repeating groups of atoms in Sample 2.
c)
The other properties will be the same because both samples are green at room temperature.
d)
The other properties will be the same because both samples are gases at room temperature.
25.
You mix two substances together the atoms move and rearrange what is this called?
a)
Model
b)
Substance
c)
Chemical reaction
d)
Property
26.
The diagram above shows the repeating groups of atoms that make up two samples. Both samples are liquid at room temperature. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)
a)
The properties will likely be the same because the repeating groups of atoms that make up the two samples have the same types of atoms.
b)
The properties will likely be the same because both samples are liquids at room temperature.
c)
The properties will likely be different because the repeating groups of atoms that make up the two samples have different numbers of atoms.
d)
The graph shows too much fluctuation to be confident about a trend.
27.
Carbon atoms change into other types of atoms like hydrogen and oxygen when they need to for a chemical reactions.
a)
True
b)
False
28.
Which claim is correct?
a)
Claim 1: The iron pipes changed into rust
b)
Claim 2: The fertilizer changed into rust
c)
Claim 3: The iron pipes and the fertilizer changed into rust
d)
Claim 4: Someone called Rusty put the rust in the water
29.
What is the science definition of model?
a)
A person who wears clothes and walks down a runway
b)
An object, diagram, or computer program that helps us understand something by making it simpler or easier to see
c)
Someone you look up to
d)
A starting substance that is part of a chemical reaction
30.
Which of these is the correct order of labels?
a)
1. Atom 2. Extended structure 3. Repeating atom group 4. Molecules
b)
1. Atom 2. Repeating atom group 3. Extended structure 4. Molecules
c)
1. Repeating atom group 2. Atom 3. Extended structure 4. Molecules
d)
1. Molecules 2. Repeating atom group 3. Extended structure 4. Atom
31.
Substances have different properties because they are made of different groups of atoms. These groups vary in the type or number of atoms that make up the group
a)
True
b)
False
32.
Atom in science means?
a)
Something that is made of all the same atoms or groups of atoms
b)
The tiny pieces that all matter, all the stuff in the world, is made of
c)
Something that can be observed about a substance, such as its color, smell, or boiling point
d)
The relative size of things
33.
Property in science means?
a)
Land you can own
b)
The items that you own such as a cellphone or hat
c)
Something that can be observed about a substance, such as its color, smell, or boiling point
d)
Something that is made of all the same atoms or groups of atoms
34.
Different substances have different properties.
a)
True
b)
False
35.
Which of these is on the macroscale
a)
The individual atoms in a table
b)
A pen you can see
c)
The atoms in the air
d)
Microscopic bacteria you can not see without a microscope
36.
All the atoms in this water bottle are the same. As a scientist what would we call the water in this bottle?
a)
Macroscale
b)
Substance
c)
Scale
d)
Property
37.
Which of these is considered a property?
a)
Smell
b)
Color
c)
Boiling Point
d)
All of these are property's
38.
What is the human made material that looks like diamonds called?
a)
Cubic Zirconia
b)
Adamantium
c)
Dilithium
d)
Vibranium
39.
What chemical substance would make orange juice taste like sweaty gym socks?
a)
Ethyl Butrate
b)
Isovaleric Acid
40.
Substance in science means?
a)
Something that can be observed about a substance, such as its color, smell, or boiling point
b)
Something that is made of all the same atoms or groups of atoms
c)
The temperature at which a substance changes from the liquid phase to the gas phase
d)
The relative size of things
41.
Oh no!!!
The person across from you opened one of the samples and is daring their partner to taste what's inside.
Which safety Guideline is not being followed?
a)
2
b)
1
c)
3
d)
4
e)
5
42.
What real life location had lead in its water in 2016?
a)
Fresno Michigan
b)
Ferndale Michigan
c)
Flint Maryland
d)
Flint Michigan
43.
3 students are given a sample of a substance. Each is asked to write down an observation of its property's. Which student did the best job on there observation?
a)
Student 1: It is white and in small pieces
b)
Student 2: It is white, grainy, and looks like crystals
c)
Student 3: It is ugly in color and solid
44.
If you are asked to describe a property of this sample What would be the best example of an observation you could make?
a)
Its a solid
b)
Its dark in color
c)
It is black and its texter is grainy
d)
It's heavy
45.
Oh no!!!
The person across from you told you that they are allergic to baking soda a few days ago. Today Mr. Dake said we are using baking soda in an experiment and the person across from you is choosing to not tell Mr. Dake
Which safety Guideline is not being followed?
a)
7
b)
1
c)
2
d)
3
e)
4
100 %
