Honors Chemistry Ch. 3 & 4

This particle is found in the nucleus and has no charge

• Neutron

• Proton

• Electron

• Positron

The ___ contains most of the mass of an atom

• Electron Cloud

• Nucleus

• isotope

• neutron

Tags

NGSS.HS-PS1-8

An atom's overall charge is ________.

• positive 

• depends

• neutral 

• negative 

Tags

NGSS.HS-PS1-7

True or False: An atom is mostly empty space.

• True

• False

Every neutral atom of carbon will have ___. Check all that apply.

• 6 protons

• 6 neutrons

• 6 electrons

• 3 isotopes

Tags

NGSS.HS-PS1-1

Which of the following is true of valence electrons?

• They are closest to the nucleus.

• They occupy the highest energy levels.

• They are outside the electron cloud.

• They do not exist in ions.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The nucleus of an atom contains which subatomic particles?

• protons and neutrons

• protons and electrons

• neutrons only

• neutrons and electrons

Tags

NGSS.HS-PS1-8

Rutherford's gold foil experiment provided evidence that...

• Negative and positive charges are spread evenly throughout the atom.
• Alpha particles have a positive charge.
• Gold is not a dense as previously thought.
• There is a dense positively charged nucleus at the center of an atom.

J.J. Thomson provided evidence that an atom...

• is the smallest particle of matter

• contains negatively charged particles

• has an overall negative charge

• has an overall positive charge

The smallest unit of an element that maintains the properties of that element

• atom

• molecule

• formula unit

• base unit

Tags

NGSS.MS-PS1-1