Medidas y laboratorio
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
A chemical bond between two nonmetals is called a
covalent bond.
A positive ion is known as a?
Cation
What type of elements are the most abundant on the periodic table?
Metal
When moving from left to right across the periodic table, what increases?
Atomic Number
Which is the correct formula for the compound formed between potassium and nitrogen?
K3N
What is in the nucleus in the atom?
protons and neutrons
Elements with the same number of protons but different number of neutrons
Isotope
Name the scientist who first include the electrons in its atomic model
Thomson
What are the elements in Group 18 called ?
Noble Gases
How many grups are on the periodic table?
18
What are the elements in Group 2 called ?
Alkaline Earth Metals
What are the elements in Group 1 called ?
Alkali Metals
Name all 3 subatomic particles.
Protons Neutrons Electrons
How are ions formed?
By losing or gaining electrons
A negatively charged ion
Anion
A bond between two atoms who share electrons is called
Covalent
The Oxide ion (O2-) has _____e-
10 e-
The sum of protons and neutrons in the nucleus of an atom is known as the _________
Mass number
A covalent bond is a sharing of
Electrons
Which is the correct formula for the compound chromium (II) oxide?
CrO
Name the compound CF4?
carbon tetrafluoride
What is the formula for zinc (II) bromide?
ZnBr2
Fluorine, chlorine, bromine, and iodine belong to the family of ______________
halogens
Relation between the amount of solute and solvent in a solution.
Concentration
A solution that cannot disolve more solute is called
Saturated
NaCl is this type of bond
Ionic
CO2 is this type of bond
Covalent bond.
The atractive force between electrons and protons
Electrostatic/electric