Vocabulary 1
Anything with mass and volume
matter
He
helium
The branch of science that studies matter
chemistry
calcium
Ca
What is the common name of sodium chloride (NaCl)?
salt
The smallest pieces of elements are __________
atoms
N
nitrogen
There are 118 different pure substances, that cannot be broken down into simpler substances, called _____________
elements
gold
Au
Negatively charged parts in atoms
electrons
Anything that takes up space has __________
volume
K
potassium
The chart that organizes all 118 elements
periodic table
chlorine
Cl
Positively charged parts in atoms
protons
2 or more substances mixed together; can be separated
mixture
Fe
iron
2 or more elements that are chemically combined
compound
lead
Pb
What are rows on the periodic table of elements called?
periods
2 or more atoms that are chemically combined
molecule
Ag
silver
Contains protons and neutrons in an atom
nucleus
sodium
Na
What is the chemical name for H2O2?
hydrogen peroxide