Lab Safety/Tools
What piece of equipment is used to measure the mass of an object?
A balance or scale
Color and melting point are examples of which type of property?
Physical
What is matter?
Anything that occupies space and has mass
Name the possible base units
meter, gram, liter
Write 4,500 in scientific notation
4.5 × 10³
What piece of equipment is used to transfer small amounts of liquid?
Pipette
Is flammability a physical or chemical property?
Chemical
What is the formula for density?
D=m/v
In order, name the units of conversion you need to know for the test
kilo-, hecto-, deka-, base, deci-, centi-, milli-
Write 0.000089 in scientific notation
8.9 × 10-5
What are the 3 types of PPE we might use in chemistry lab?
Gloves, Goggles, Lab Coat
Is density a physical or chemical property?
Physical
A rock has a mass of 40 g and a volume of 10 cm³. What is its density?
4 g/cm³
You are converting from kilometers to meters. Which unit is smaller?
Meters
Write 3.2×104 in standard notation
32,000
This document provides information about the hazards, handling, storage, and emergency procedures for a chemical
Safety Data Sheet (SDS)
A scientist cuts a 20 g piece of metal exactly in half. Which of these properties changes: color, density, or mass?
Mass
A substance changes from a solid directly into a gas, without becoming a liquid first. What phase change is occurring?
Sublimation
Convert 762 cL to daL
0.762 daL
Which number is larger?
A. 7.5×10-3
B. 7.5×10-5
A. 7.5×10-3
When reading the volume on a graduated cylinder, what is the point at which you should actually read the measurement called?
Meniscus
A scientist observes a substance and writes: "It is blue, has a density of 3.2 g/cm³, dissolves in water, and reacts with acid to produce a gas." How many physical properties and how many chemical properties are described?
3 physical properties (blue/color, density, solubility) and 1 chemical property (reactivity with acid)
A rock is placed in a graduated cylinder. The water level rises from 35 mL to 48 mL. The rock has a mass of 39 g. What is its density?
3 g/mL
Two students are racing to see who can travel farther.
Who traveled farther, and by how many meters?
Alex traveled 400 meters farther
Three of these represent the same number. One does not. Which one?
A. 3.5×10-4
B. 0.00035
C. 35×10-5
D. 3.5×10-3
D. 3.5×10-3