Pre-Test
Charges
Subatomic
Numbers
Surprise!
100

This is the smallest part of an element. All matter is made of this!

What is an atom?

100

Atoms that has more electrons will have a _____ charge.

What is negative?

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

This subatomic particle has a mass of 0

What is an electron?

200
Neutrons are located outside of the nucleus. True or False?
False!
200

Atoms with less electrons than protons will have a ____ charge

What is positive?

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

The atomic number is the same as the ____.

What is the number of protons?

300
Electrons are located outside of the nucleus. True or False?
True!
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
Neutons in Magnesium?

What is 12?

400

Protons & Neutrons weigh the same. True/False

True!

400
When an atom loses an electron it has this kind of electrical charge.
What is positive?
400

When a atom is neutral, the number of protons will equal the number of _____.

What are electrons?

400
The mass number of Potassium.
What is 39.098?
400

Cobalt is in period ___?

What is 4?
500

Which is the lightest subatomic particle and what is its mass?

What is an electron? (mass = 0)

500
An atom that is neither positively or negatively charged.
What is neutral?
500

What subatomic particle determines the identity of the atom? (aka. what element it is)

What is protons?

500

Mass number - atomic number = ______ __ ________.

What is the way to find number of neutrons?

500

Aluminum is in period ____ and group _____.

What is period 3 and group 13?

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