Parts of An Atom
Periodic Table Basics
Periodic Table Tells Us?
Atomic Numbers
Counting Atoms
and
Balancing Equations
100
The inner part of an atom that contains the proton and the neutron is called the __________.
nucleus
100
How many periods are on the periodic table.
7
100
What happens to the number of energy levels (shells) elements have as you move down the column (group)?
They increase
100
Atomic numbers of an atom are the same as the number of what in an atom?
Protons
100

This type of number comes after the element it applies to, has a smaller font size.

subscript

200
These particles have a positive charge and are found inside the nucleus.
proton
200
How many groups are on the periodic table.
18
200
What will give you the number of energy levels an element will have?
The period number.
200
Carbon's atomic number is _______.
6
200

This number comes before the compound it applied to, is large font size.

Coefficient

300
These particles are located within the nucleus, and have no charge.
neutrons
300
These are elements are on the right side of the periodic table. They are brittle and insulators.
nonmetals
300
What are valence electrons?
Electrons in the outer energy level (shell)
300
What element has a number of 56?
Barium
300
What are the substances on the left side of a chemical equation called?
Reactants
400
These particles are negatively charge and are found outside the nucleus.
electrons
400
These are elements on the zig zag line (staircase). They are semiconductors.
metalloids
400
What happens to the number of valence electrons as you go across the periodic table?
They increase across the period.
400
What does APE MAN stand for?
Atomic Number, Proton, and Electron (These are all the same number) Mass- Atomic Number= Neutrons
400
What are the substances on the right side of a chemical equation called?
products
500
This subatomic particle is what gives an atom it's identity.
protons
500
These elements are good conductors, have a shiny luster and are malleable. They are on the left side of the periodic table.
metals
500

What is a quick way to find the number of valence electrons?

Look at the element's A number.

500
How many neutrons does fluorine have?
10
500
How do you know if a chemical equation is balanced?
You have the same number of atoms on both the reactant and the product side or the same mass.
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