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Pre-Test
Isotopes
Subatomic
Periodic Table
Light
100
This is the smallest part of an element.
What is an atom?
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
An atom is in this when all of its electrons have the lowest possible energies.
What is a ground state?
200
Neutrons are located outside of the nucleus. True or False?
False!
200

In Oxygen -16 and Oxygen -17, the 16 and 17 are which numbers? 

What is the mass number?

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
This state is less stable than the ground state.
What is an excited state?
300
Electrons are located outside of the nucleus. True or False?
True!
300

What is the difference between isotopes of the same atom?

What is different number of neutrons?

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

The atom in group 13, period 2.

What is Boron?
300

What happens when an electron gets "excited"?

Moves to a higher energy level and gains energy.
400
Protons and neutrons are about the same size. True or False?
True!
400
Explain how atoms of isotopes are the same as each other.

What is the same protons and electrons?

400

Used the gold foil experiment to prove that most of the atoms was empty space.

Who is Rutherford?

400

What distinguishes one atom from another?

What is the atomic number?
400

When is light produced by an atom?

What is waste from an electron moving to it's ground state.

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

An atom that is neither positively or negatively charged when it has this.

What is equal number of electrons and protons?

500

The model of the atom that we draw based on the idea that the electrons orbit the nucleus like planet around the sun.

What is the Bohr model?

500

This person described atoms as chocolate chip cookies because it was a positive ball of energy with negative charges embedded in it.

Who is Thomson?

500
Scientists use this to describe how electrons move around the nucleus.
What is the electron cloud model?