Chemical Reactions

Did a chemical reaction occur?

• Yes

• No

• Maybe

• I don't know

Can atoms be created or destroyed during a chemical reaction?

• Yes, new atoms can form during a chemical reaction due to rearrangement

• Yes, atoms can be destroyed during a chemical reaction

• No, the starting and ending number of atoms will be different

• No, atoms are not created or destroyed during a chemical reaction

Tags

NGSS.MS-PS1-5

Did a chemical reaction occur

• yes the 2 reactants turned into 1 product

• yes the 2 products turned into one reactant

• There is not enough information

• no

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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?

• The properties will likely be different because the repeating groups of atoms that make up each sample are different

• The properties will likely be different because there are more repeating groups of atoms in Sample 2

• 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

• 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

Tags

NGSS.MS-PS1-1

The process during which atoms rearrange to form new substances

• Chemical reaction

• atom rearrangement

• atom alignment

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Something that can be observed about a substance such as color, smell, or boiling point.

• atoms

• property

• melting point

• rearrangement

Tags

NGSS.MS-PS1-2

After mixing, the workers found two substances that melt at higher temperatures in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the end

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

a group of atoms joined together in a particular way

• model

• matter

• atom

• molecule

Tags

NGSS.MS-PS1-1

Samples 1 and 2 will be

• different

• same

• need more information

• I don't know (never the right answer)

Tags

NGSS.MS-PS1-1

The diagram above shows the repeating groups of atoms that make up two samples. Both samples are gases at room temperature. Will the other properties of the samples likely be the same or different?

• The other properties will likely be different because there are more repeating groups of atoms in Sample 1

• The other properties will likely be the same because both samples are gases at room temperature

• The other properties will likely be different because the repeating groups of atoms that make up the two samples have different numbers of atoms.

• The other properties will likely be the same because the repeating groups of atoms that make up the two samples have the same types of atoms

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2