The Periodic Table
Physical vs Chemical
Atomic Structure
Bohr Model/Lewis Dot
Chemical Reactions
100
What number tells you how many protons and electrons an element has?
The Atomic Number
100
Ice melting is an example of a physical or chemical change?
Physical
100
Protons have a _______ charge
positive
100
What do you write in the center of a Bohr Model?
The element symbol
100
A + B -> AB is what type of reaction?
Synthesis
200
How do you find the number of neutrons an element has?
You subtract the Atomic Number from the Mass Number
200
A type of change where the substance stays the same, but size and shape may change
Physical Change
200
Electrons have a ______ charge
Negative
200
What do the dots in a Lewis Dot Structure represnet?
Valence Electrons
200
What type of reaction is represented by AB + C -> AC + B
Single Replacement
300
What do all elements in a group share?
The same amount of valence electrons
300
Type of change where a new substance is created
Chemical Change
300
What two subatomic particles create the mass of an atom?
protons and neutrons
300
The number of electrons that can fit in the 1st and 2nd orbital in a Bohr Model
2 and 8
300
What are the two products of a Combustion reaction?
Carbon dioxide and water
400
Why are Halogens (in group 17) so reactive?
They all have 7 electrons and only need one - high electronegativity
400
Name at least one sign that a chemical change has taken place
temperature change, bubbles created, or color change
400
Electrons have a ______ charge, so Anions ______ electrons and Cations _____ electrons.
negative, gain, lose
400
Draw the Lewis Dot Structure for Calcium
400
What number are you able to change in a chemical reaction to balance the equation?
Coefficient
500
What period do you find noble gases AND why are they non-reactive?
Group 18 and because they have a full octet
500
An exothermic reaction releases energy or absorbs energy?
Releases
500
Where are protons found in the atom?
Nucleus
500
Name This Element
Neon
500
This equation: FeBr3 + 3 NaOH → Fe(OH)3 + 3NaBr is an example of what type of reaction?
Double Replacement