Lab Safety
List one lab safety rule that we learned on lab safety day.
(:
Fill in the blanks: A hypothesis is stated in a _____ , _____ format.
if , then
What is the SI unit that measures length/distance?
meters
1 and 10
How many significant figures in the following number: 378
3 significant figures
Why must goggles be worn in the lab?
To protect your eyes from chemical splashes, steam, fire, or broken glass.
Fill in the blank: __________ can be represented in the form of a chart or graph.
What is the symbol of the SI unit that measures mass?
g
Write the following in scientific notation: 12345
1.2345x104
How many significant figures in the following number: 32005
5 significant figures
Where is the fire blanket located?
Front of the class by the door.
Fill in the blank: A(n) ___________ variable is one that the scientist changes on purpose.
Independent
What is the symbol for the prefix milli?
m
Write the following in scientific notation: 0.00035
3.5x10-4
How many significant figures in the following number: 98000
2 significant figures
List 3 things that scientists wear to be safe in the lab.
Goggles, hair tie, long sleeve shirt, pants, closed toe shoes, gloves
List 3 control variables from the toothpick tower lab.
Time, sponges and toothpicks, lab partners, the classroom, the rulers, the instructor
Convert 300 mL to L.
0.300 L
Write the following in standard notation: 9.8x104
98000
How many significant figures in the following number: 200.000
6 significant figures
What is the proper way to smell a substance in the lab?
Waft the scent towards your face with your hand.
Convert 300kg to g.
300 000
Write the following in standard notation: 3.08x10-6
0.000 003 08
How many significant figures in the following number: 0. 000 000 000 400 560 300
9 significant figures