Intro To Chemistry 7th grade

Matter that is made of one type of atom or molecule and has unique properties is known as

• A mixture

• A substance

• A homogenous

Tags

NGSS.MS-PS1-1

Unique characteristics that help identify a substance and distinguish it from another.

• Mixtures

• Properties

• Substance

• Systems

Tags

NGSS.MS-PS1-2

Which of the following is not a property of fat (crisco)?

• Fat has a density of .92 g/mL.

• Fat has a mass of 9.2 grams

• Fat has a melting point around 40 degrees Celsius

• Fat is not soluble in water.

Think about the pieces of chalk we looked at in class. Which of the following is a property of chalk?

• Size

• Shape

• Weight

• Color

Tags

NGSS.5-PS1-3

What is it called when substances are mixed together but later can then be separated into the original substances?

• Mixture

• Chemical Reaction

• Product

• Reactant

In class we combined drink mix with water and later separated the two by evaporating the water, this was considered a:

• Mixture

• Chemical Reaction

• Substance

Mr. Brown added brown powder to water and stirred for 1 minute. The result was a clear liquid. What can you say about the brown powder?

• The brown powder is soluble.

• The brown powder is soluble in water.

• The brown powder is not soluble in water.

• The brown powder is soluble in all liquids.

Tags

NGSS.MS-PS1-2

True or False: Fat and Soap are both soluble in oil.

• True

• False

Salt _________________ in water.

• is soluble

• is not soluble

You decide to mix salt in water to create saltwater. Which is the solute?

• Salt

• Water

• Saltwater