Science Benchmark Review (8th grade)

Which particle has a positive charge?

• electron
• orbital
• proton
• neutron

Choose the particle that has no charge.

• nucleus
• neutron
• proton
• electron

What is the mass of a proton and a neutron?

• 1amu
• 2grams
• 13amu
• 10cm

This particle determines what element you have - the elements identity.

• electron
• proton
• neutron
• valence shell

An electron has a _____ charge.

• negative
• positive
• neutral

Which particles make up the nucleus of an atom?

• protons and neutrons
• electrons and protons
• electrons, protons, and neutrons
• electrons and neutrons

The particles of the atom you can find by knowing the atomic number.

• neutrons
• protons and electrons
• protons and neutrons
• atomic mass

An element with a mass number of 10 and an atomic number of 6 has how many protons?

• 5
• 8
• 6
• 10

The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number

A vertical column is called...

• group
• tower
• period
• crew