7 Trimester II Physical Science Exam

Who first proposed the idea that matter is made up of tiny indivisible particles called "atomos"?

• John Dalton

• Democritus

• J.J. Thomson

• Ernest Rutherford

What discovery did J.J. Thomson make using the cathode ray tube experiment?

• Protons

• Neutrons

• Electrons

• Atomic Nucleus

What was the major finding of Rutherford’s gold foil experiment?

• Atoms are indivisible

• Electrons are embedded in positive matter

• Atoms have a dense, positively charged nucleus

• Atoms have fixed orbits

Tags

NGSS.HS-PS1-8

Which atomic model suggests that electrons orbit the nucleus in specific energy levels?

• Plum Pudding Model

• Nuclear Model

• Bohr Model

• Electron Cloud Model

Which subatomic particle determines an element’s atomic number?

• Neutron

• Electron

Which group contains the noble gases?

• Group 1

• Group 2

• Group 17

• Group 18

What type of wave requires a medium to travel through?

• Mechanical wave

• Electromagnetic wave

• X-ray

• Gamma ray

Tags

NGSS.MS-PS4-2

What is the unit of frequency?

• Meters

• Hertz

• Joules

• Newtons

Which type of electromagnetic wave has the shortest wavelength?

• Radio waves

• Microwaves

• Gamma rays

• Infrared waves

Tags

NGSS.HS-PS4-1

The octet rule states that atoms tend to have how many electrons in their outer shell?

• 2

• 6

• 8

• 10