The Atom
Periodic Table
Radiation
Chemical Reactions
More Chemistry
100

This is the name of the center of the atom.

Nucleus

100

This is the letter that represents the name of the element.

Chemical Symbol

100

This type of radiation can be stopped by a single piece of paper.

Alpha Radiation

100

This states that mass cannot be created or destroyed.

The Law of Conservation of Mass

100

This is how many protons the element Gold (Au) has.

79 protons.

200

This is the subatomic particle with a positive charge.

Proton

200

This number tells us the amount of protons in an atom.

Atomic Number

200

This is the highest penetrating power of the three types of radiation. Described as a high energy photon.

Gamma Radiation

200

This type of bond is formed when electrons are shared between two or more atoms.

Covalent Bond

200

This is the term for the right side of a chemical equation.

Products

300

This is the maximum number of electrons the first energy level can hold.

2
300

This number tells us the amount of protons and neutrons in an atom.

Atomic Mass

300

This type of radiation decay is caused by an electron emitted from the nucleus.

Beta Radiation

300

The number 4 is called this in the expression: 4NaCl

Coefficient

300

This type of reaction takes place when two or more substances combine.

Synthesis Reaction

400

This is the subatomic particle with no charge (neutral).

Neutron

400

This family has a full valence shell and will not react with other elements.

Noble Gases

400

This is what we call a different form of an element that has a number of neutrons that make it unstable.

Isotope

400

In H2SO4, there are this many oxygen atoms.

Four (4)
400

This is what we call a reaction when heat/energy is released.

Exothermic Reaction

500

This is the name for electrons on the outermost shell of the electron cloud.

Valence Electrons

500
This group number has the most reactive metals on the periodic table.

Group 1

500

The alpha particle is identical to this atomic nucleus.

Helium
500

The type of reaction that CaCO3 ---> CaO + COis.

Decomposition Reaction

500

The total number of atoms represented in this expression: C6H4(COOH)OCOCH3

21 atoms