Lab Safety
What is the correct way to wear goggles and why are they important?
Wear them over your eyes, not your neck. They keep any dangerous chemicals out of your eyes.
What does KHDbdcm stand for?
K
H
D
b-base
d
c
m
Kilo
Hecto
Deka
b- base unit ( without the prefixes: gram, meter, etc)
d-deci
c-centi
m-milli
How many significant figures does 0.00956 have?
3
How many inches in 230 centimeters?
1 inch=2.54 cm
90.6 inches
What are significant digits?
Round another decimal place after your measurement.
What do you do if you get a little bit of chemical on your hand?
Wash your hands really good.
Are kilograms larger or smaller than milli grams?
Kilograms are larger
How many significant figures does 19,000,001 have?
8
How many meters in 450 yards?
1 meter=3.281 feet
411.45 meters.
What is precision?
Hitting the same place over and over again.
What would you do if you got a bunch of chemicals all over your body?
Use the shower.
What is a Kilogram, milligram, and centigram
A milli gram is a 1/1000 of a gram
A centigram is a 1/100 of a gram
Put 21,000,000 into scientific notation.
2.1 times 107
How many cm in 230 feet? 1inch =2.54cm
Put in scientific notation.
7.0 times 103
What is accuracy?
Actually hitting the target or hypothesis.
When are you allowed to drink or eat in the lab area?
NEVER
If Becka has 365 yards of yarn in her house, how many inches of yarn does she have?
She has 13,140inches of yarn
Put 36,890 into scientific notation.
3.7 times 104
How many mm in 50 ft? 1 inch=2.54 cm
Put in scientific notation.
2 times 104
What 2 things are on the x axis?
Manipulated variable and independent variable.
How do you use a fire extinguisher?
P-pull
A-aim
S-squeeze
S-sweep
How many milligrams is in 100 kilograms?
100,000,000 mg is in 100 kg
What is 4.01 times 5 using significant figures?
20
How many feet in 350 meters? 1 inch=2.54cm
Put in scientific notation.
1.1 times 103
What 2 things are found on the y axis?
Dependent variable and responding variable.