Atoms, Elements, and the Periodic Table

Which best describes elements?

• smallest piece of matter, can't be broken down chemically

• simplest form of matter, made up only one type of atom

• simplest form of matter, made up on one type of molecule

• a mixture of different types of protons, neutrons, electrons

Atoms are

• the smallest piece that still retains the same properties

• the largest piece that still retains the same properties

• the simplest form of matter, made of only one type of atom

• makes up solids and liquids, but not gases

Use your periodic table from notebook or one you created. What would be the atomic number of a metalloid with 14 protons?

• 7

• 14

• 28

• Si

What is the name of the element that is found in Period 3, Group 15 on the Periodic Table of Elements?

• sodium

• nitrogen

• argon

• phosphorus

What is the atomic symbol for lead?

• Ld

• Pb

• ld

• pb

What is the atomic number of the element with one more proton than beryllium (Be)?

• 5

• 11

• 10

• 4

What properties would gallium have?

• 31 protons, metal, highly reactive

• non-metal, 31 protons, non-reactive

• moderate activity, 31 protons, metal

• gas, 31 protons, metal

Which element matches this description? Noble Gas, 8 valence electrons, 4 electron shells

• potassium

• krypton

• boron

• bromine

What element is shown here?

• Carbon

• Neon

• Nitrogen

• Lithium

Which are non-reactive gases?

• metals

• group 1

• group 18

• nonmetals