Substances and Their Properties

What is a substance?

• any collection of molecules

• matter that includes molecules that have at least 4 different elements

• matter that has a constant chemical composition and characteristics

Tags

NGSS.MS-PS1-1

What is another term for "substances" that is commonly used?

• agents

• chemicals

• moleclules

• picos

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which of the following is considered to be macroscopic?

• one drop of water

• two atoms of carbon

• three molecules of water

• ten atoms of oxygen

What is mass?

• The shape of a substance

• The number of molecules in an object

• The size of an object

• The amount of matter in an object

Tags

NGSS.5-PS1-1

NGSS.5-PS1-2

What is the unit of measure for mass?

• centimeters

• kilograms

• picometers

• pounds

Which of the following is NOT considered a property (or quality) of a substance?

• atoms

• mass

• odor

• shape

Tags

NGSS.5-PS1-3

Which of these is a property (quality) that does NOT change for all objects of a substance? (Hint: Think about what you cannot change).

• mass

• odor

• shape

• volume

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is one way to tell metals of the same size and color apart?

• Test their density

• measure their surface area

• Weigh them to find out their mass

Tags

NGSS.MS-PS1-2

Density equals

• mass / volume

• volume / mass

• mass x volume

• mass + volume

What would happen if you used a solubility test to identify flour by mixing it with water?

• the flour would clump up

• the flour would dissolve into the water

• the flour would become sticky and turn into dough

• the flour would change from a white to a brown.

Tags

NGSS.MS-PS1-2