Atomic History and Structure Review

If chlorine has 17 protons and 18 electrons what is its charge?

• -1

• +1

• +2

• -2

Who completed the Gold Foil Experiment?

• Rutherford

• Thomson

• Bohr

• Democritus

A positive ion

• cation

• anion

• proton

• electron

How many electron shells does the pictured atom have?

• 1

• 2

• 3

• 4

Match the Following

• The smallest unit of an element that keeps the element’s chemical properties.

• Element

• The dense center of an atom containing protons and neutrons.

• Proton

• A substance that cannot be broken down into simpler substances by chemical means.

• Nucleus

• Positively charged particles found in the nucleus of an atom.

• Neutron

• Particles with a neutral charge found in the nucleus of an atom.

• Atom

Tags

NGSS.MS-PS1-1

Using a periodic table (you can use the one in the textbook) order the following elements by # of Electron Shells, least to greatest.

• Sodium

• Calcium

• Strontium

• Barium

• Dubnium

How many valence electrons does the pictured atom have?

• 20

• 3

• 2

• 4

Tags

NGSS.MS-PS1-1

Using a periodic table (you can use the one in the textbook) order the following elements by # of valence electrons, least to greatest.

• Potassium

• Barium

• Carbon

• Oxygen

• Neon

Found orbiting outside the nucleus, this subatomic particle has a negative charge.

• Neutron

• Proton

• Electron

• Idontknowatron

What is found in the nucleus of atoms?

• Protons and electrons.

• Protons, neutrons, and electrons.

• Protons and neutrons.

• Neutrons and electrons.

Tags

NGSS.MS-PS1-1