Chem 1 Review

All matter is made up of particular particles called

• atoms

• cells

• compounds

• molecules

Elements on the Periodic Table of Elements are classified into categories such as

• rocks and minerals

• molecules and atoms

• mixtures and compounds

• metals and nonmetals

An element's properties can be predicted from its:

• location on the periodic table

• atomic mass

• number of neutrons

• symbol

The periodic table is arranged into what 3 major groups:

• elements/atoms/compounds

• metals/transition metals/rare-earth metals

• metals/metalloids/nonmetals

• periods/groups/rare-earth

A hydrogen atom is made up of one proton and one electron. Why do the proton and electron stay near each other?

• Positive and negative charges attract

• Two negatives make a positive

• Positive and negative charges repel

• Positive and positive charges repel

The atomic number of an atom is

• The mass of the atom

• The number of protons added to the number of neutrons

• The number of protons

• Negatively charged

The atomic mass of an elements is

• The number of protons and neutrons in the atoms of the element

• The mass of the most common isotope of that element

• A measure of the density of that element

• The average mass of all the isotopes of the element

If an atom has 6 protons, then is also has

• 6 electrons

• 6 neutrons

• More protons than electrons

• An atomic mass of 6

Who is the father of the periodic table?

• Louis Pasteur

• Henry Mosley

• Gregor Mendel

• Dmitri Mendeleev

What state of matter are most elements found in?

• solid

• liquid

• gas