Fall Semester Chemistry Review

Which state of matter will hold its shape without a container?

• Solid
• Liquid
• Gas
• Plasma

The kinetic theory states that the higher the temperature, the faster the 

• particles that make up a substance move
• bonds between atoms break down
• molecules of gas rush together
• lighter particles within a substance clump together

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

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.

Tags

NGSS.HS-PS1-8

How many electrons are in an atom with an atomic number of 20, an atomic mass of 45, and a charge of +2?

• 20

• 10

• 2

• 18

What particle provided the positive charge for an atom?

• proton 
• neutron
• electron
• nucleus

Which particle does not contribute mass to the atom?

• Proton
• Neutron
• Electron
• Nucleus

Which of the following families is the least electronegative?

• noble gases

• Halogens

• transition metals

• alkali metals

Tags

NGSS.HS-PS1-1

Which element has the highest ionization energy?

• F
• Cl
• Br
• I

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Give the formula for oxygen dichloride

• OCl₂
• O₂Cl₂

• OCl
• O₂Cl