Lab Safety
True/False:
You can eat and drink anything you want in the lab.
FALSE
0.5 x 1010
Is that a valid scientific notation?
NO!
(The number in the front should be bigger than 1 and smaller than 10.)
True/False:
daL is a unit for mass.FALSE
What does IV stand for?
Independent Variable
Is cm3 is unit for mass, volume, length, or temperature?
volume
If you break a beaker in the lab, where should you dispose the broken pieces of glassware?
Broken Glass Container
Negative exponent indicates large number.
FALSE
(Negative exponent means small number)
Which unit is bigger: cm or hm?
hm
What variable do we keep constant in an experiment?
Control Variable
What equipment do we use to meausre volume in lab?
Can you use fire extinguishers on a person?
NO!
Convert the following into scientific notation:
58000
5.8 x 104
1km = ________ dm
10,000 dm
Jim is feeding 3 different types of fish food to goldfish and checking their body fat.
What is dependent variable in this situation?
Body fat
What's the science definition of temperature?
Average kinetic energy of particles.
What method are you supposed to use to smell a chemical?
Wafting method
Convert the following into regular number:
3.0 x 105
300,000
540 mg = ____________ dag
0.0540 dag
Jim is feeding 3 different types of fish food to goldfish and checking their body fat.
What is control variable in this situation?
Type of gold fish, amount of food, size of the tank, etc.
Convert 150oC to K
423K
How many broken glass containers are in the lab?
3
Convert the following into cm:
9.8 x 10-3 km
9.8 x 103 cm or 9800 cm
6.23 x 105 cL = ____________ kL
6.23 kL
Bob wanted to test which type of soda is most acidic.
What's independent and dependent variable?
IV: Type of soda
DV: pH
What is our next unit about?
Lightning:)