Matter and Change
Charges
Subatomic
Numbers
The Periodic Table
100

Two main types of pure substances

What is are elements and compounds?

100
Objects with the same charge do this when they come close to each other.
What is repel?
100
Three subatomic particles.
What are protons, neutrons, and electrons?
100
The sum of protons and neutrons in the nucleus of an atom.
What is mass number?
100

Columns that go up and down on the periodic table

What are groups?

200

This type of change occurs when boiling water for hot tea

What is a physical change?

200
Objects with different charges do this when they come close to each other.
What is attract?
200
Located outside of the nucleus and have a negative charge.
What are electrons?
200
The number of protons in an atom of a certain element.
What is atomic number?
200

Horizontal rows on the periodic table

What are periods?

300

The type of change that occurs when burning a piece of magnesium 

What is a chemical change?

300
When an atom gains an electron it has this kind of electrical charge.
What is negative?
300
Located inside of the nucleus and have a positive charge.
What are protons?
300
The atomic number of Oxygen.
What is 8?
300

Name for group 7A on the periodic table

What are Halogens?

400

Air is an example of this types of substance

What is a homogeneous mixture?

400
When an atom loses an electron it has this kind of electrical charge.
What is positive?
400
Atoms of different elements have different numbers of these.
What are protons?
400
The mass number of Potassium.
What is 39.098?
400

The most common ion charge for elements in group 2A on the periodic table

What is +2?

500

This type of substance can be separated through physical means

What is a heterogeneous mixture?

500
An atom that is neither positively or negatively charged.
What is neutral?
500
An atom with the same number of protons but different number of neutrons.
What is an isotope?
500
Mass number - atomic number = ______ __ ________.
What is the numer of neutrons?
500

Name for the group of metals found in the center of the periodic table

What is the transition metals?

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