Investigations / Variables
Models & Procedures
Lab Safety & Equipment
Properties of Matter
Metals, Nonmetals, Metalloids
100
What is the first step in an investigation cycle?
Observation
100
True or false: Effective models represent “things”, rather than an event or process (phenomenon)
False
100
True or False: We can sit on lab tables
False (you know who you are... side eye)
100
Properties can be either physical or _________
chemical
100
Is the periodic table composed mainly of metals, nonmetals, or metalloids?
Metals
200
What is an independent variable?
What you change (ex. the thing that affects the other variable)
200
Name the 2 parts of a procedure
Materials & instructions
200
What happens when you don't wear lab safety goggles?
You go to jail for 5 seconds with Ms. Thresher :)
200
Define luster
How shiny an object is
200
Is hydrogen a metal, metalloid, or nonmetal?
Nonmetal
300
Which question is investigative:
What is the best temperature for growing flowers?
How does temperature affect the growth of the flowers?
How does temperature affect the growth of the flowers?
300
What do materials include in a procedure?
What you need and HOW MUCH of it you need
Ex. 2 ounces of water
Do NOT just say "water" - tell me how MUCH (think of a cookie recipe)
300
Name this piece of lab equipment
Erlenmeyer flask
300
Density is an (intrinsic or extrinsic) property
Intrinsic
300
Would boron (B) be classified as a metal, nonmetal, or metalloid?
Metalloid
400
Research Question: Does salt affect how fast water boils?
Independent Variable:
Dependent Variable:
Controlled Variables:
IV: salt
DV: how fast water boils
Control: amount of water used
400
Name 2 qualities that make an effective procedure? (Note: they do not have to be the exact answers in the correct response, but along similar lines)
In order, uses action steps
Clear with no assumptions
Detailed
400
Name this equipment and its use:
Graduated cylinder - measures volume of liquids precisely
400
Which of the following are qualitative properties:
color, malleability, volume, mass, luster
color, malleability, luster
400
I have a dull, malleable element that is solid at room temperature. Would this be classified as a metal, nonmetal, or metalloid?
Metalloid
500
I want to test which soda has the most sugar in it.
What would be my independent variable?
What would be the dependent variable?
What would be the controlled variable?
1. soda
2. sugar
3. amount of soda tested, can not bottle, temperature, etc.
500
In chemistry, concepts can be shown on three distinct levels, which are called the chemist’s triplet. Name those 3 levels.
The macroscopic level
The sub-microscopic level
The symbolic level
500
Name this chemistry equipment
Crucible
500
Define malleability
property that allows a material to deform, bend, or flatten into thin sheets under compressive stress without breaking or cracking
500
If I were to separate Gold (Au) from Carbon (C) by using a magnet, which would stick to the magnet? Why?
Gold - it is a metal and therefore magnetic