Atoms are made of these three particles
Protons, electrons and neutrons
This number describes how many protons are in the nucleus
Atomic number
The symbol for this element is B
Boron
This is the name for when two atoms are linked
Bond
This is the definition of matter
Anything that has mass and takes up space
The nucleus is made up of these particles
Protons and neutrons
The rows of the periodic table are called these
Periods
This is the 8th most common element in the universe
Magnesium (Mg)
Bonds are formed by this particle
Electrons
These are the three main states of matter
Solid, liquid and gas
These particles orbit around the nucleus
Electrons
This number tells the number of protons and the number of neutrons
Atomic mass
Diamonds are made of this element
Carbon (C)
The name of a group of atoms of the same type
Compound
This is the last dense state of matter
Gas
When atoms heat up, their speed does this
Increases.
Elements with the same number of electrons in their outer shell are in the same what?
Family
This is the chemical formula for table salt
NaCl (Sodium Chloride)
Bonded molecules share particles on this energy level
Outer or valence level
This is the amount of space something takes up
Volume
The third energy level holds this many electrons
Eight
This element is in the 4th period and 8th family
Iron (FE)
This element is lighter than air and makes up 10% of all atoms in the universe
Helium (HE)
This type of drawing shows bonded elements and their shared particles
Electrons dot diagram
This form of matter has definite volume but not definite shape
Liquid