Unit 2 (the Atom) Review

Which subatomic particle is not found in the nucleus?

• Proton
• Electron
• Neutron

Tags

NGSS.MS-PS1-1

How many electrons are in the outer shell of nitrogen?

• 3
• 4
• 5
• 6

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which electromagnetic wave has the lowest frequency?

• γ-rays
• cosmic rays
• radio
• TV

Tags

NGSS.HS-PS4-1

Which category of elements makes up the majority of the Periodic Table?

• Metals
• Nonmetals
• Metalloids

Tags

NGSS.HS-PS1-1

What is the maximum number of electrons in the first principle energy level?

• 2
• 4
• 6
• 8

Which family of elements are the least reactive?

• halogen
• alkali metal
• alkaline earth
• noble gases

Tags

NGSS.HS-PS1-1

If an element has an atomic number of 42, the number of protons and electrons are...

• 84 p, 42 e
• 42 p, 0 e
• 21 p, 21 e
• 42 p, 42 e

Tags

NGSS.MS-PS1-1

Which of the following elements is in the same period as phosphorus?

• Carbon
• Magnesium
• Nitrogen
• Oxygen

Tags

NGSS.HS-PS1-1

The smallest particle of an element that retains the properties of that elements is a(n)?

• atom
• proton
• electron
• neutron

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Who was the second person to suggest the existence of atoms?

• Thomson
• Democritus
• Dalton
• Bohr