Chemical Reactions

Chemical Reactions

03/03/2021

Multiple Choice

1. 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.

Multiple Choice

2. Serena mixed two samples together: a

gray solid that smells like flowers and a

gray solid that smells like bleach. She

analyzed the results and found two ending

substances. One of the ending substances

was a white solid. This ending substance is

made up of the repeating group of atoms

shown above. Which of the diagrams to the

left shows the repeating groups of atoms

that make up the samples Serena mixed

together?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Multiple Choice

3. Tiana is a chemist who is making a chemical

to add to swimming pools in order to

make the water safer. She mixed two solid

substances together in a sealed container.

The diagram above shows the repeating

groups of atoms that make up the two

starting substances.

After mixing, Tiana found two liquid

substances in the sealed container. (Nothing

had escaped.) Which of the diagrams to the

left shows the repeating groups of atoms

that make up the ending substances?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Multiple Choice

4. 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.

Multiple Choice

5. Damian mixed two samples together: a

red liquid that smells irritating and a black

solid with no smell. He analyzed the results

and found two ending substances. One of

the ending substances was a yellow solid.

This ending substance is made up of the

repeating group of atoms shown above.

Which of the diagrams to the left shows the

repeating groups of atoms that make up the

samples Damian mixed together?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Multiple Choice

6. Santiago is a chemist working to make a

new kind of antacid, which is a medicine

that helps with stomach pain. He mixed

two powdery solid substances together

in a sealed container. The diagram above

shows the repeating groups of atoms that

make up the two starting substances.

After mixing, Santiago found two liquid

substances in the sealed container.

(Nothing had escaped.) Which of the

diagrams to the left shows the repeating

groups of atoms that make up the ending

substances?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Multiple Choice

7. 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 properties will likely be different because there are more repeating

  groups of atoms in Sample 1.

Multiple Choice

8. Marisol mixed two samples together:

a brown liquid with no smell and a

colorless gas that smells irritating. She

analyzed the results and found two

ending substances. One of the ending

substances smelled sweet. This ending

substance is made up of the repeating

group of atoms shown above. Which

of the diagrams to the left shows the

repeating groups of atoms that make up

the samples Marisol mixed together?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Multiple Choice

9. Jamie works at a company that makes

cleaning chemicals. She is trying to make

a chemical that smells like flowers. She

took two samples that were gases at room

temperature and mixed them in a sealed

container. The diagram above shows the

repeating groups of atoms that make up the

two starting substances.

After mixing, Jamie found two substances

that smelled like flowers in the sealed

container. (Nothing had escaped.) Which of

the diagrams to the left shows the repeating

groups of atoms that make up the ending

substances?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Multiple Choice

10. 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.