Fair Experiments with Solutions

The INDEPENDENT VARIABLE is the ONE (1) THING that is changed in a FAIR EXPERIMENT.

What is the INDEPENDENT VARIABLE in this experiment?

• the number of cups

• the temperature of the solvent

• whether or not the solution is stirred

• the particle size of the solute

Tags

NGSS.MS-ETS1-1

The INDEPENDENT VARIBLE is the ONE (1) THING that is changed in a FAIR experiment.

What is the INDEPENDENT VARIABLE in this experiment?

• the cup size

• temperature of the water

• whether or not it is stirred

• particle size of the solute

A student performed an experiment.

The table shows the setup.

What is the independent variable?

Click on the correct table HEADING.

Tags

NGSS.MS-PS2-2

A student performed an experiment.

The table shows the setup.

What is the independent variable?

Click on the correct table HEADING.

Tags

NGSS.MS-PS2-2

A student is testing to see if particle size of a solute affects the rate of solubility. The table shows the conditions she used in two cups, 1 and 2.

Is this setup correct?

• yes, because both of the cups are stirred

• no, because the particle sizes are the same

• yes because the temperature of each cup is different

• no, because both cups are stirred

Tags

NGSS.MS-PS1-2

A student is performing an experiment. What is the student trying to find out?

• Does particle size have an effect on the rate of dissolving?

• Will a solute dissolve faster if it is stirred?

• Do warmer temperatures dissolve solutes faster than cooler temperatures?

• There's no way to tell because it isn't set up correctly

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student adds 100 mL of water to two cups.  Which conditions can the student use to study the impact of temperature on the rate of dissolving sugar?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-2

A student set up this experiment. What is she trying to find out?

• Does temperature affect the rate of solubility?

• Does particle size affect the rate of solubility?

• Does stirring affect the rate of solubility?

• there's no way to tell because it isn't set up correctly

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student is performing an experiment to see if temperature has an effect on the rate of solubility. Is his setup correct?

• yes, because the temperature of the cups is different

• no, because the amount of sugar is the same

• yes, because the amount of sugar is the same

• no, because the temperature of the cups should be the same

Tags

NGSS.MS-PS1-2

A student set up this experiment. What is she trying to find out?

• How many cups are needed to dissolve a solute?

• Which temperature dissolves a solute faster?

• Which particle size dissolves a solute faster?

• Does stirring affect the rate of dissolving?