Chemistry Part A

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

The Modern Periodic Table of Elements is arranged by

• atomic mass

• atomic number

• valence electrons

• number of isotopes

What does 12.011 represent?

• atomic mass

• atomic number

• element name

• chemical symbol 

What does the C represent?

• atomic mass

• atomic number

• element name

• chemical symbol 

The horizontal (side to side) rows in the Periodic Table are called

• groups

• families

• periods

• atomic numbers

what is the biggest group on the table

• metals

• nonmetals

• metaloids

• halogens

what group number are the noble gases

• 17

• 18

• 14

• 15

All matter is made of .....

• energy 

• atoms 

• air

• chemistry

Most of the mass of an atom is found it its _____.

• electron cloud

• nucleus

• atomic number

• empty space

Which subatomic particle has a negative charge in the atom?

• proton

• neutron

• electron

• quark