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Pre-Test
Vocabulary
Subatomic Particles
Numbers
Periodic Table
100
This is the smallest part of an element.
What is an atom?
100

The positively charged particle in an atom

What is a proton?

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

An shorten name for elements

What is an element symbol?

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

The particle with no charge in an atom

What is a neutron?

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 first element on the periodic table.

What is Hydrogen?

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

The smallest particle of an element

What is an atom?

300
Located inside of the nucleus and have a positive charge.
What are protons?
300
The atomic number of Oxygen.
What is 8?
300

This element has an Atomic Number of 11

What is Sodium?

400
Protons and neutrons are about the same size. True or False?
True!
400

The middle of an atom and holds the protons and neutrons

What is the nucleus?

400
Atoms of different elements have different numbers of these.
What are protons?
400

The mass number of Potassium.

What is 39?

400

This element has 65 electrons

What is Terbium?

500
This is the smallest subatomic particle.
What is an electron?
500

A pure substance that cannot be separated

What is an element?

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

This element has 20 neutrons

What is Calcium?