Lab Safety
If your lab partner's clothes catch on fire, what is the first thing you should do?
Tell the teacher!
How many sigfigs: 230 mL
2
Ripping paper, Physical or chemical?
PHYSICAL!
Convert 23 cm to m
0.23 m
HO or HE: Salt water
HO
What word is used to describe how to appropriately smell unknown substances in lab?
Waft
How many sigfigs: 0.003010
4
Burning Toast
Chemical
Convert 3,600,000 mm to km
3.6 km
HO, HE, C. or E: Zinc
ELEMENT!
Best measuring tool to measure precise amounts of liquid
Graduated Cylinder
Solve and ROUND for sigfig: 3400/0.25
14000 or 1.4*10^4
What type of PROPERTY is this: Flammable
CHEMICAL!
Pluto's average distance from the Sun is about 3,666,000,000 miles. What is this in inches?
2.323 x 10^14
HO,HE, C, or E: Salad
HE
FALSE OMG!
Solve and ROUND for sigfig: 20+ 2.1
22 or 2.2 *10^1
What is the law of conservation of Matter (Mass)?
"Matter cannot be created nor destroyed."
A basketball weighs approximately 1.35 kg. What is this mass in grams (g)?
1350 g
The components of this mixture can be easily seen with the naked eye and are distinguishable.
Heterogeneous
Your friend caught on fire, what do you do?
Cover them with a safety blanket and THEN tell me that they are on fire.
Solve and ROUND for sigfig: 6.3 x 2.903
18 or 1.8 * 10^1
Physical or Chemical property: Attract to the south pole of a magnet.
PHYSICAL!
The Earth’s circumference around the equator is slightly bulged as compared to the circumference around the poles. If the circumference around Earth’s equator is 29,902 miles, what is this in Mm?
48.123 Mm
Elements and compounds are classified as this...
Pure substances!