Chemistry Semester 1 Practice Exam

A compound is made of

• at least two different elements.

• one element

• two of the same element.

• at least two different compounds.

Tags

NGSS.MS-PS1-1

This particle is found in the nucleus and has no charge.

• Neutron

• Proton

• Electron

This particle is found in the nucleus and has a positive charge.

• Electron

• Proton

• Neutron

Tags

NGSS.HS-PS1-8

This is a negatively charged particle found outside the nucleus.

• Electron

• Proton

• Neutron

Tags

NGSS.MS-PS2-3

The first person to ever talk about an atom was?

• Democritus

• Rutherford

• Dalton

All matter is made of what?

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How did Rutherford discover the nucleus?

• Cathode tube ray experiment

• Gold Foil Experiment

• Planetary Model

• Plum Pudding Model

Who stated that all atoms of the same element are excacty alike?

• Democritus
• Dalton
• Thomson
• Borh

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

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

Tags

NGSS.MS-PS1-1

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

Tags

NGSS.MS-PS1-1