8th grade Science Fall Benchmark Review questions

What is the definition of a proton?

• A negatively charged particle of an atom located in the Shells

• A neutrally charged particle of an atom located in the nucleus

• A positively charged particle of an atom located in the nucleus

• A neutrally charged particle of an atom located in the shells

Which is the definition for the word Electron

• A negatively charged particle located in the shells

• A positively charged particle located in the nucleus

• a negatively charged particle located in the nucleus

• A neutrally charged particle located in the nucleus

What is considered a neutrally charged particle of an atom located in the nucleus

• Proton

• Electron

• Neutron

• Megatron

What is the definition of the word Group?

• A column in the periodic table that let's you know how many shells there are .

• How many atoms are in a molecule

• A row in the periodic table that let's you know how many shells there are .

• A column in a periodic table that represents the amount of valence electrons

What is considered a row on the periodic table that tells you how many shells an atom has?

• Group

• Proton

• Period

• Electron

What is the center of an atom called? (contains protons and neutrons)

• Shells

• Orbitals

• Valence Electron Cloud

• Nucleus

WHat are alkali metals?

• The alkaline earth metals are elements in group 2 of the periodic table. . The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure

• Electron Shells

• any of the elements occupying Group 1A (1) of the periodic table. They are very reactive, electropositive, monovalent metals forming strongly alkaline hydroxides.

• an element or substance that is not a metal.

What groups are considered the "most reactive" out of all the groups

• Group 1 ONLY

• Group 7 ONLY

• Group 1&7

• Group 8

WHat is the number at the top of a symbol on the periodic table that let's you know how many protons and total electrons are there?

• Atomic Mass

• Atomic Number

• Electron Cloud

• Groups

What is the number at the bottom of a symbol on the periodic table that tells you the weight of the nucleus?

• Atomic Number

• Atomic Mass

• Groups

• Periods