Introduction to S3

When a certain amount of solvent cannot hold any more solute it is called a ________ solution.

• Diluted
• Saturated

You are given a small beaker of solution at room temp. You add a bit of solute to the solution and it dissolves. The solution was:

• saturated

• unsaturated

• concentrated

• warm

What is a solvent?

• The substance that does the dissolving in a solution.
• The substance that is being dissolved in a solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

What is a substance that is dissolved in another substance? 

• solution
• solute
• solvent
• compound

Water (H₂O) freezing is an example of:

• A chemical change
• A physical change

Tags

NGSS.MS-PS1-4

A chemical change always results in the formation of a:

• gas

• solid

• new substance

• new state of matter

You drop two Alka-Seltzer tablets in a glass of water and immediately see bubbles coming up through the water. They probably indicate:

• A change of color
• Formation of a gas
• A change in temperature
• Formation of a precipitate

Tags

NGSS.MS-PS1-2

Is Iron (Fe) an element or a compound?

• Element
• Compound

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Which of the following is not a compound?

• HCl

• Cl2

• NaCl

• CO2