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

The term for an atom with a different number of protons and electrons.

What is an ion?

200

Has practically zero mass and 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

The number of electrons in the following ion Cu+2.

What is 27 electrons?

300
Located inside of the nucleus and have a positive charge.
What are protons?
300

The atomic number of Strontium (Sr).

What is 38?

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

Number of neutrons in Potassium-41

What is 22?

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

The formula used to calculate the average atomic mass of an element with two isotopes.

What is (mass x % abundance) + (mass x % abundance)?

500

The isotope name for the element with 93 protons and 178 neutrons.

What is Neptunium-271?

500

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

What is the transition metals?

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