Atomic Theory
What number do you use to find the number of protons?
atomic number
C-14 has how many neutrons?
8
A _____________ is produced when bubbles are formed.
Gas
An acid is ________ on the pH scale
0-6
The periodic table has ______ elements
118
How many periods are shown on the periodic table?
7
How are ions formed?
By losing or gaining electrons
A reaction that increases in temperature is called a
Exothermic reaction
A base is __________ on the pH scale
8 - 14
What type of elements are the most abundant on the periodic table?
Metal
What particles are in the nucleus of the atom?
protons and neutrons
A positive ion is known as?
A cation
A reaction that decreases in temperature is called a
Endothermic reaction
Water is neutral because it has _______ number of H and OH
equal
beta decay is the same as
an electron
What are the elements in Group 18 called ?
Noble Gases
How many grups are on the periodic table?
18
The _____________ are on the right hand side of the chemical equation
pH 6 is a ___________ acid
weak
Name all 3 subatomic particles.
Protons Neutrons Electrons
What are the elements in Group 1 called ?
Alkali Metals
A negatively charged ion
Anion
The law of conservation of mass states..
mass/matter cannot be created or destroyed.
pH 13 is a _____________ base
strong
Oyxgen has _____ protons
8
The sum of protons and neutrons in the nucleus of an atom is known as the _________
Mass number
Elements with the same number of protons but different number of neutrons
Isotope
is this equation balanced?
Zn + 2HCl -> ZnCl2 + H2
Yes
acid + base ->
salt + water
Alpha decay is the same as
2 protons and 2 neutrons/ helium nucleus
Lithium, sodium, potassium, rubidium, caesium and francium belong to the family of ______________
Alkali metal
The Chloride ion (Cl-) has how many _____e-
18 e-
Balance this equation
Mg + HCl -> MgCl2 + H2
Mg + 2HCl -> MgCl2 + H2
acid + metal ->
salt + hydrogen gas
The products of a acid and metal carbonate reaction are
salt + water + carbon dioxide gas