vocab
What is a molecule?
group of atoms
What is density?
Things in a certain area
Salt water is an example of a solution. T/F
True
What is a subatomic particle that is not found in the nucleus?
Electron
what is an ion?
group of atoms with electric charge
What is a group?
Column in a periodic table
An element that is equal to 79 is carbon -T/F
True
Are there nuclear reactions going on in our bodies?
yes
what is an isotope?
group of ions
What is a period?
horizontal row in the periodic table
An element that is equal to 1 is helium. T/F
false
Proton, neuron, and electrons
what is a group?
column in the periodic table
What is a metal?
Left side of a periodic table
Metalloids are easily broken. T/F
True
What subatomic particles are responsible are responsible for bonding?
Electrons
What is an isotope?
group of ions
What is a non-metal?
right side of periodic table
An element's number of valence electrons is the same as its atomic number. T/F
False
What is a chemical change?
Substances combines with another substance