Lab Safety
We do this with long hair.
What is a hair tie?
The number of significant figures in 0.3206.
What is 4?
Substances can exist in three main forms: solid, liquid, and gas. These are known as this.
What is the "states of matter," or "phases of matter"?
Found in the center of the atom, this contains 2 different subatomic particles.
What is the nucleus?
Matter can not be created or destroyed.
What is the Law of Conservation of Mass?
Your feet need to be in these.
What are closed toed shoes?
The prefix kilo means this.
What is 1,000?
A mixture that is the same throughout.
What is homogenous?
An anion is this.
What is a negatively charged atom?
Who is Dimitri Mendeleev?
You should heat your test tube up facing this direction.
What is up?
120 km is this many meters.
What is 120,000 m?
When a substance has no definite shape or volume it is in this state.
What is a gas?
Atoms of the same element, but with different numbers of neutrons are known as this.
What is an isotope?
The idea that matter can be reduced to it's smallest form, the "atomos," was put forth by this philosopher.
Who is Democritus?
This can not be done while in the lab.
What is "play around," or "eat and drink"?
This refers to how close a series of measurements are to one another.
What is precision?
This unit of measurement is used for mass.
What is the gram?
Atoms are so small there mass is calculated in this measurement.
What is the atomic mass unit?
A compound is always composed of the same elements in the same proportions.
What is the Law of Definite Proportions?
This must be worn at all times.
What are goggles?
When adding 2.3 and 1.05, using significant digits, the answer is this.
What is 3.4?
To separate a substance into its component parts based on its boiling point is known as this.
What is distillation?
Atoms lose or take electrons in an effort to achieve this.
What is ground state?
The percent deviation from the accepted value in a lab experiment.
What is percent error?