Lab Safety
The primary lab tool we use for measuring the volumes of liquids
Graduated Cylinder
The variable on the x-axis of a graph.
Independent variable
Objects of higher density tend to _____ if placed in a lower density substance.
sink
Two requirements to be classified as matter.
Volume and mass
How many protons does Carbon have?
6
The PPE used to prevent chemicals from getting in the eye.
Goggles
Control group
Oil will ____ in water.
float
Two classifications of matter.
Pure substances and mixtures
How many neutrons does Bromine (Br) have?
45
Bunsen Burner and Hot plate
The variable that is kept constant so that it does not interfere with experimental results.
Controlled Variable
Water's density
1 g/mL
A physical combination of two or more substances.
Mixture
The family that has elements that exist in liquid, solid, and gaseous forms at room temperature.
Halogens
Safety Shower
If I eat spinach everyday and my roommate eats kale everyday, and we each measure our height everyday to see who grows taller. What is the dependent variable?
Our height
If a rock has a mass of 3 g and a volume of 1 mL, what is it's density? Include units.
3 g/mL
Diatomic element/molecule
The element that has 3 valence electrons and 4 electron shells.
Gallium (Ga)
The piece of equipment used to perform experiments with volatile chemicals.
Fume Hood
If a doctor wants to see how a new medication affects her patients and she creates two groups: one who receives the medication and one who receives a fake pill with no medicine in it, what would the group who does not receive the medicine be?
The control group
If my phone has a density of 4 g/mL and a volume of 2 mL, what is the mass of my phone? Include units
8 g
Sand and water, orange juice and pulp, and milk are all examples of...(be specific)
Heterogeneous Mixtures
The number of electrons that an atom of Zn2+ has.
28