Atoms
What are the three subatomic particles?
Electrons, Neutrons, and Protons
A bag of skittles would be considered what type of mixture?
Heterogenous
Homogeneous
Heterogeneous
How many letters can a chemical symbol have?
Most have 1-2 but some have 3
What is the difference between a compound and a molecule?
Molecules are made up of 1 type of atom while compounds can have more than 1 type of atom.
1 Valence Electron
1 Shell
Hydrogen
What are the charges of the three subatomic particles?
Positive Protons, Negative Electrons, and Neutral Neutrons
A bottle of coolant would be considered what type of mixture?
Homogeneous
Heterogeneous
Homogeneous
What are the rules when writing a chemical symbol?
First letter is capitalized but the rest are lower case
Would the following be considered a compound or molecule?
C3
Molecule
4 Shells
3 Valence Electrons
Gallium
How can you calculate the overall charge of an atom?
Protons - Electrons
What is the difference between a homogeneous mixture and a solution?
A solution involves at least one substance being dissolved
Chemical symbols represent __________________ while chemical formulas represent ___________________
-Elements
-Compounds
Symbols = Elements
Formula = Compounds
Would the following be considered a compound or molecule?
CO2
Compound
7 Shells
2 Valence Electrons
Radium
How many electrons can each shell typically hold?
2 electrons in the first shell and 8 in every other shell
Can mixtures be separated? Why or why not?
Yes they can. They are not chemically bonded.
How many atoms are in the following formula?
KHC4H4O6
K:1 H:1 C:4 H:4 O:6
16
Would the following be considered a compound or molecule?
Hydrogen gas
Molecule
6 Shells
6 Valence Electrons
Polonium
An ion is an atom that has gained or lost ______________ which alters its overall charge.
Electrons
How can you separate out the solid ingredients from a liquid mixture? (Example: salt water)
Boil the liquid and the solid substances will remain
How many atoms are in the following formula?
(CH3)2CHOH
C:1-2 H:3-6 C:1 H:1 O:1 H:1
12
Would the following be considered a compound or molecule?
Hydrogen Dioxide
Compound
4 Shells
8 Valence Electrons
Krypton