Atoms & Bohr Models
Periodic Table
Molecules & Compounds
Ionic Bonding
Balanced equations
100
What are the 3 subatomic particles in an atom?
Protons, neutrons and electrons
100
Which group contains the alkali metals?
Group 1
100
Define a molecule
Two or more atoms bonded together
100
What is a cation?
Positive ion, (atom with a positive charge) loses electrons
100
What does a balanced chemical equation look like in terms of atoms?
Same atoms on both sides
200
How manu electrons fit in the first shell of a Bohr Model?
2
200
Which group contains the noble gases?
Group 18
200
Give an example of a molecular element
O₂, H₂, Cl₂
200
What is an anion?
Negative ion, (atom with a negative charge), gains electrons
200
Balance: H₂ + O₂ → H₂O
2H₂ + O₂ → 2H₂O
300
What is the electrons configuration of sodium?
(2, 8, 1)
300
What does the period number tell you?
Number of shells
300
What is the formula for water?
H₂O
300
Which two types of elements for ionic compounds?
Metals + Non-metals
300
True/False: You can change subscripts to balance an equation
False
400
Which particle determines the element's atomic number?
Protons
400
Which element is in Period 2, Group 1
Lithium
400
Which of these is a compound: O₂, Cl₂, or H₂O?
H₂O
400
In NaCl, which is the cation and which is the anion?
Na+ = cation, Cl- = anion
400
Which law explains why equations must be balanced?
Law of Conservation of Mass
500
Draw the Bohr model of Chlorine
500
Which group decreases in reactivity as you go down?
Group 17, halogens
500
What is the formula for ammonia?
NH3
500
Why do atoms form ionic bonds?
To get full outer shell/ stable configuration
500
Balance: Na + Cl₂ → NaCl
2Na + Cl₂ → 2NaCl