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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

The most reactive non-metal

flourine

100
The sum of protons and neutrons in the nucleus of an atom.
What is mass number?
100

draw the structure of an atom

x

200
Neutrons are located outside of the nucleus. True or False?
False!
200
Objects with different charges do this when they come close to each other.
What is attract?
200

This rule states that atoms gain or lose electrons to achieve 8 valence electrons.

octet rule

200
The number of protons in an atom of a certain element.
What is atomic number?
200

what is the change from liquid to gas called

evaporation

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

the transfer of electrons form _____ bonds

ionic bonds

300

electron configuration of a potassium atom

15

300

State the difference between hot gas particles and cold air particles.

-
400
Protons and neutrons are about the same size. True or False?
True!
400
When an atom loses an electron it has this kind of electrical charge.
What is positive?
400

The 3rd shell can take up to ____ electrons.

18

400

what is an isotope, give and example

x

400

draw the atomic structure on the board

x

500
This is the smallest subatomic particle.
What is an electron?
500
An atom that is neither positively or negatively charged.
What is neutral?
500

The charge on a magnesium ion after bonding with oxygen.

+2

500
Mass number - atomic number = ______ __ ________.
What is the numer of neutrons?
500

state 3 things about noble gases

x