Chemistry 1
What number do you use to find the number of protons?
atomic number
What are the 3 main states of matter?
Solid, liquid, gas
What is the 25th element called?
Manganese or Mn
C-14 has how many neutrons?
8
What is the formula for density?
Density = Mass/Volume (Mass over volume)
How many periods are shown on the periodic table?
7
What is the atomic number of neon (Ne)?
10
What is the formula for the compound with: once carbon, three hydrogen, one oxygen, and one hydrogen.
CH3OH
A positive ion is known as a(n)?
Cation
The group of elements that form 2- ions
What is 16
When moving from left to right across the periodic table, what increases?
What is Electronegativity &/or ionization energy
The correct formula for the compound formed between potassium and nitrogen has this subscript for potassium
What is 3
What is in the nucleus in the atom?
protons and neutrons
How many valence electrons do elements in the group halogens (Cl,Br,F,I) have
What is 7
Will oxygen accept or donate electrons? How many?
Accept two electrons
What are the elements in Group 18 called ?
Noble Gases
the only polyatomic ion that is a cation
what is ammonium
What are the elements in Group 2 called ?
Alkaline Earth Metals
What are the elements in Group 1 called ?
Alkali Metals
How many valence electrons total are in Methanol (CH3OH)
what is 14
How are ions formed?
By losing or gaining valence electrons
A negatively charged ion
Anion
NaHSO4 has how many total atoms?
What is 7.
The Oxide (O2-) ion has _____electrons
8 e-
The sum of protons and neutrons in the nucleus of an atom is known as the _________
Mass number
All atoms in a molecule are shown when we draw structures in chemistry except
what is carbons and hydrogens
Elements in Group 2A form ions with a charge of ___
+ 2
What group of elements satisfies the octet rule without forming compounds (do not react)?
Noble gas
Two or more compounds with the same molecular formula but different arrangement of atoms in the molecule and different properties
What is isomers
the charge on an Aluminum ion
what is Positive three