Chemistry 1
Substance that contains space and mass
What is Matter
All matter exists in three forms solid, liquid and
What is Gas
How many protons and electrons are in Al3+? (Al has an atomic number of 13)
13 P, 10 e
The atomic number tells how many of these are in an atom.
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 this 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 building block of matter that cannot be divided into simpler substances.
What is Atom
Valence electron number increases as you move ____ to _____ across the columns of the periodic table.
left, right
How many valence electrons can fit in the outermost energy level at most?
8 Valence Electrons
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
What is the phase change from Gas to Liquid called?
Condensation
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
What are non metals
Balance the following equation:
___Au2S3 + ____H2 -> ___Au + ___ H2S
Au2S3 + 3H2 -> 2Au + 3H2S
What property measures the resistance of a liquid to flow?
What is Viscosity
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