Group 2, Period 2
Be (Beryllium)
What is an atom?
smallest building block of matter
Atom
smallest building block of matter
Metal
Make up most elements
Are gases light or heavy?
light
Group 18, Period 2
Neon
protons, neutrons, electrons
Gives and atom its identity
Luster
Shiney, how it reflects light
Are metals good conductors or electricity?
YES
Group 1, Period 1
Hydrogen
What two subatomic particles give an atom its mass?
Average atomic mass
made up of protons and neutrons
Ductility
To be pulled into wires
What is the atomic number for carbon?
6
How many elements in period 1 and what are they?
2 (H, He)
Where are electrons located?
electron shells, or clouds, or orbitals
nucleus
center of an atom, on the inside of an atom
Malleability
Flattened out into sheets
How many protons does carbon have?
6
How many groups are there? How many periods?
Groups 18, Periods 7
What two subatomic particles are in the nucleus of an atom?
Protons and Neutrons
Electron Cloud
outside of the atom: The shells
Transition Elements
most common metals
Name two gases that are in group 17.
F, Cl, Br, I, At, Ts