Lesson 1 Check p 64

Which term or terms can be used to describe this model: Is it an element?

• Yes, it is an element.

• No, it is not an element.

• There is not enough information to tell.

• Sometimes yes, and sometimes no.

Tags

NGSS.MS-PS1-1

Which term or terms can be used to describe this model: Is it a compound?

• There is not enough information to tell.

• No, it is not a compound.

• Yes, it is a compound.

• Sometimes yes, and sometimes no.

Tags

NGSS.MS-PS1-1

Which term or terms can be used to describe this model: Is it a molecule?

• Yes, it is a molecule.

• No, it is not a molecule.

• There is not enough information to tell.

• Sometimes yes, and sometimes no.

Tags

NGSS.MS-PS1-1

What is the chemical formula for the molecule shown?

• H2O

• H2

• NH

• NH3

Tags

NGSS.MS-PS1-1

Suppose you find a website that classifies the rusting of a nail as a change to only the physical properties of iron. Would that be accurate?

• Yes, it is accurate.

• No, it is not accurate.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Think about different mixtures that are in a kitchen. Which of the following is a homogeneous mixture?

• Sugar and water

• Salsa

• Salad

• Oil and water

Think about different mixtures that are in a kitchen. Name 2 heterogeneous mixtures below.

What is the difference between a molecule and a compound?

• A compound is a single atom, while a molecule is a group of compounds.

• A molecule is always a compound, but a compound is not always a molecule.

• A molecule is a group of atoms bonded together, while a compound is a molecule that contains at least two different elements.

• A molecule and a compound are the same thing.

When we made the models of molecules in class, what was used to represent the atoms?

• marshmallows

• K'NEX connector

• each toothpick

• K'Nex Rod

Tags

NGSS.MS-PS1-1

When we made the models of molecules in class, what was used to represent the chemical bonds?

• marshmallows

• different color ink

• K'NEX Connector

• K'NEX rod