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WorksheetsUnit 1 Recap!
Total questions: 21
Worksheet time: 22mins
To find the density of a wooden cube, you would ____________.
first find the mass. Then divide the volume by the mass.
Use the formula D=M/V.
first find the mass and then multiply by the volume.
Add the mass and the volume.
Students are dissolving salt in a certain volume of water. What property are they testing for?
density
melting point
mass
solubility
Which of the following is NOT an indicator that a chemical change has occurred?
a change in state
a temperature change
a color change
bubbles
A type of change in which a new substance is formed.
Chemical Change
Physical Change
Chemical Reaction
Not listed
Measures how much of a solute (such as sugar) will dissolve in a given amount of solvent (such as water).
Solubility
Mixture
Heterogeneous
Homogeneous
The tendency of a substance to float or rise in a fluid.
buoyancy
boiling point
color
conductivity
A homogeneous mixture is the same thing as...
a solution
a heterogeneous mixture
a compound
an element
Which substance is least soluble at 0 ºC?
KI
KNO3
KClO3
Ce2(SO4)3
At 80'C, KBr's solubility is:
100
90
80
0
Independent variable
Dependent variable
Conclusion
The type of variable that responds to the experiment and is what you measure or count to determine if your hypothesis is true.
Erin is testing to see how different amounts of nitrogen infused in the soil will impact the height of her corn plants. She puts two corn plants into two pots. One is filled with nitrogen infused soil and the other is not. She puts the regular soil pot outside and the nitrogen infused plant in her bathroom. The corn in the regular soil grows to 7 feet tall and the corn in the nitrogen soil grows to 2 feet tall.
What is the dependent variable?
The regular soil
The nitrogen infused soil
The height of the plants
The plant in the bathroom
Using the picture, identify the control group.
Trial 1
Trial 2
Trial 3
