Student Expectations – Ready to Learn!

The smallest part of any material is called a ________ and is made up of one or more atoms.

• molecule

• cell

• compound

• element

Basically, the atom is constructed of a central core containing ________ surrounded by orbiting electrons.

• protons

• neutrons

• photons

• molecules

Protons are ________ charged.

• positively

• negatively

• neutrally

• doubly

Electrons are ________ charged.

• negatively

• positively

• neutrally

• doubly

In an electrically neutral atom, the number of protons is equal to the number of ________.

• electrons

• neutrons

• atoms

• molecules

According to Electron theory, what is the simplest atom?

• hydrogen

• helium

• lithium

• carbon

According to Electron theory, which atom is the heaviest?

• uranium

• hydrogen

• carbon

• oxygen

According to Electron theory, how many protons and electrons does a Helium atom have?

• Two protons and two electrons.

• One proton and one electron.

• Two protons and one electron.

• One proton and two electrons.

How many protons and electrons does a copper atom have?

• 28 protons and 28 electrons

• 29 protons and 29 electrons

• 30 protons and 30 electrons

• 31 protons and 31 electrons

An electrically neutral atom has as many _______ protons as there are _______ electrons.

• positive; negative

• negative; positive

• neutral; charged

• charged; neutral