Unit 4 Lesson 1 Practice

How many electrons can go in the first energy level of an atom?

• 2

• 8

• 18

• 32

How many electrons can go in the Second energy level of an atom?

• 2

• 8

• 18

• 32

What is the the outermost shell that contains electrons called?

• Shells

• Isotope

• Orbit

• Valence

What is the atom called when there is adding or removing electrons creates atoms with (+) or (-) charges?

• isotopes

• ions

• neutral

• stable

What is the drawing of an atom that only has the symbol and the valence electrons?

• Lewis Dot Diagram

• Bohr Diagram

• Thompson Diagram

• Dalton Diagram

What is the name of this element?

• Helium
• Hydrogen
• Argon
• Silver

Tags

NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• Electrons and megatrons

Tags

NGSS.MS-PS1-1

Which element does this Bohr model represent?

• Aluminum

• Silicon

• Magnesium

• Cobalt

Answer explanation

The 13 protons determine the atomic number of this element

How many valence electrons does this Bohr's model show?

• 8

• 2

• 12

• 10

Answer explanation

The 12 protons determine the atomic number of this element

How many valence electrons does Nitrogen have?

• 5

• 7

• 14

• 21

Answer explanation

The dots shown represent the valence electrons