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Chem 1st Semester Final

Across
The atomic ____ is the total of protons & neutrons in an atom
Temperature scale in which 0 is -273 Celsius
The atomic ____ is the amount of protons in an atom
Varieties of atoms of an element with differing numbers of neutrons
Type of formula that shows types of atoms and their ratios
Mix of metals
Type of formula that shows types of atoms present and their relative positions
He discovered the electron
Type of covalent pond in which electrons are not shared equally
SI unit for mass
Atomic particle with positive charge
Type of covalent bond in which electrons are shared equally
Type of diagrams that show the element symbol and valence electrons
Down
SI unit of amount of substance
Outer shell electrons
Helium is a ____ gas
Ions that have more than one atom in them
Matter with no fixed shape of volume
He proposed the modern atomic theory
Atomic particle with no charge
He discovered the nucleus
SI unit of length
Atomic particle with negative charge
If an element is in group 17 it is a ____
Matter with fixed shape and volume
Bond in which electrons are shared
Bond in which electrons are exchanged