Chemistry Vocabulary
Parts of an Atom
Periodic Table of Elements
What is Matter?
Atomic Numbers
100

a form of energy that an object or a particle has by reason of its motion

Kinetic Energy

100
The inner part of an atom that contains the proton and the neutron is called the __________.
Nucleus
100

There are 7 and they are placed horizontally on the table 

Periods

100
This is anything that takes up space (has a mass).
matter
100
Atomic numbers of an atom are the same as the number of what in an atom?
protons
200

the number in front of the formula, and tells us how many molecules of a given formula are present

coefficient

200
These particles have a positive charge and are found inside the nucleus.
proton
200

There are 18 and they are vertical on the table.

Groups or Families

200
The smallest pieces of matter are called __________.
atoms
200
Carbon's atomic number is _______.
6
300

numbers that come after a symbol and below, and tell you the number of atoms of that element

Subscript

300
These particles are located within the nucleus, and have no charge.
Neutron
300

Atomic masses are measured in what?

AMU

300
What type of particle holds the protons and neutrons together in the nucleus?
mesons
300
What element has a number of 56?
barium
400

same amount of matter exists before and after the change—none is created or destroyed

Law of Conservation of Matter

400

These particles are negatively charge and are found outside the nucleus.

electrons

400

The protons and electrons are equal to this number.

Atomic Number

400
Up, Down, Strange, Charm, top and bottom are all names for what type of particle?
quarks
400
Why does hydrogen have an atomic number of 1?
because it only has one proton
500

a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.

Chemical Reaction

500
Most of the mass of an atom is located here.
nucleus
500

How do you find the number of neutrons of an element?

Rounds the AMU to the nearest whole number, then subtract the atomic number 

500
What type of particle are quarks held together by?
gluons
500
Some atoms have more ___________, which makes it an isotope and gives it a negative charge
electrons
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