This is divided into two types: mixtures and substances
What is matter
100
The number of significant figures in the number
689.32
What is 5
100
What is never allowed in the lab
Food
100
A hypothesis must be __________
What is testable
100
The lab we did first in this class
What is the cornstarch lab
200
This is bigger than an atom but smaller than a cell
What is a molecule
200
The number of significant figures in the number
123,000 m
What is 3
200
The only time you would use the emergency shower
If you are completely covered in a chemical
200
The step after experimentation
What is analyze data and make conclusions
200
The idea that gases have a lot of energy and volume, liquids have less energy and volume, and solids have the least energy and volume.
What is the particle model.
300
Unopened soda pop is an example of a ____________ mixture
What is homogeneous
300
256,900 in scientific notation
2.569 x 10^5
300
What you always do before completing the lab
Read the entire lab instructions
300
The fifth step in the scientific method is...
What is ANALYZE RESULTS AND DRAW CONCLUSIONS
300
The bubble mixture that we found makes the worst bubbles.
What is the mixture of water, soap, and salt.
400
Describe a bowl of cereal using some/all of the following terms:
heterogeneous
homogeneous
mixture
substance
A cereal bowl is a heterogeneous mixture
400
Add the following numbers with correct significant figures
2.45 + 772.3
What is 774.7
400
Why you shouldn't leave your supplies out after an experiment (two reasons)
It's your responsibility and the teacher can't clean it all up.
It's more safe because only you know where you left off in the experiment.
Another class needs to use the lab after you leave.
400
Why must we only test one variable at a time?
If we test more than one variable at a time, we will not know what variable caused the results.
400
The reason the pop can imploded in the experiment
It imploded because the temperature changed, causing the gas to condense to liquid. Liquid has a smaller volume, so it shrank along with the can.
500
Heather dissolves sugar into water. Was this a chemical or physical process, and how might she reverse the process?
It is a physical process that can be reversed by boiling out the water.
500
Multiply the following numbers using correct significant figures
(4.5 x 10^3) x 5.6
What is 25000 or 2.5 x 10^4
500
Where is the closest fire extinguisher to you right now?
In the storage room.
500
List the six steps of the scientific method in order
What is QUESTION, BACKGROUND RESEARCH, HYPOTHESIS, EXPERIMENT, ANALYZE RESULTS AND DRAW CONCLUSIONS, REPORT RESULTS.
500
List all the controlled variables in the bubbles lab
Same soap (type and amount)
Same amount of water
Same type of beaker
Same person blowing for each trial