Substance that contains space and mass
What is Matter
All matter exists in three forms solid, liquid and
What is Gas
How many protons, neutrons, and electrons are in Al3+?
13 P, 14 N, 10 e
The atomic number tells us this.
What is the number of protons?
What is the atomic number of neon (Ne)?
10
Substances that cannot be reduced to simpler substances are called
What are Elements
Given the following equation, how many moles of water are produced from 4 mols of oxygen?
2H2 + O2 -> 2H2O
8 mols
What type of change occurs when ice melts to water
What is Physical
Name all 3 subatomic particles.
Protons, Neutrons, Electrons
A chemical reaction where two elements in different compounds trade places is what?
Double Replacement
What is the basic unit of matter that cannot be divided into simpler substances by ordinary chemical means
What is Atom
Valence electron number increases as you move ____ to _____ across the columns of the periodic table.
left, right
Giving a client a perm would be considered what type of change
What is Chemical
The type of bond where electrons are transfered
Ionic Bond
What's the molar mass of Fe?
55.85 g/mol
When two or more atoms are joined together chemically
What is Molecule
Ice is an example of this state of matter
What is Solid
What is a valence electron?
Electron in the outermost energy level
In covalent bond the valence electrons are
Shared
Name one molecular formula that could have and empirical formula of CH2
C2H4
A substance formed by chemically combining two or more atoms of different elements is known as
What is Compound
Water is an example of this state of matter
What is Liquid
The sum of protons and neutrons in the nucleus of an atom is known as the _________.
Mass number
Will oxygen gain or lose electrons?
Gain two electrons
How many moles of oxygen are in 32 g?
2 mols
The elements can be found on the right side of the periodic table of the elements.
What are non metals
Balance the following equation:
___Au2S3 + ____H2 -> ___Au + ___ H2S
Au2S3 + 3H2 -> 2Au + 3H2S
Who is Rutherford?
Atoms with full valence electron shells are called
Noble Gasses
matter is neither created or destroyed in a chemical reaction
Law of Conservation of Energy