Chemistry I Test Review (2-15-22)

Which particle has a positive charge?

• electron
• orbital
• proton
• neutron

Choose the particle that has no charge.

• nucleus
• neutron
• proton
• electron

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

• electron
• proton
• neutron
• valence shell

What are valence electrons?

• electrons on the first orbital always
• nucleus
• the outermost shell
• the number of electrons on the outermost orbital

Describe an Electron Cloud?

• the mist outside of an atom
• home of the protons
• where electrons are located
• nucleus

Which particles make up the nucleus of an atom?

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

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

• 5
• 8
• 6
• 10

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 20
• 10
• 5
• 25

Most of the mass of an atom is contained here.

• electron orbitals 
• nucleus
• shells
• atomic #

What section is the least reactive? 

• yellow
• red
• dark blue
• orange