RSHS - 2020 - yr 10 Chemistry - Pretest 1

The outer most electrons of an atom

• valance electrons

• diatomic molecules

• bohr models

• isotopes

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Atoms tend to gain, lose, or share electrons in order to achieve a full outer energy level

• bohr model

• octet rule

• isotopes

• valance electrons

An atomic diagram that shows protons, neutrons, and all electrons

• valance electrons

• diatomic molecules

• bohr models

• isotopes

Tags

NGSS.MS-PS1-1

Is the number of protons in an element

• atomic mass

• atomic number

• valance protons

• diatomic molecules

Is the protons plus the neutrons

• valance electrons

• atomic number

• atomic mass

• bohr diagram

Tags

NGSS.HS-PS1-7

Are molecules of two atoms of the same element. Elements found is nature this way are, H₂, O₂, N₂, F₂, Cl₂, Br₂ and I₂.

• valance electrons

• atomic mass

• atomic weight

• diatomic molecules

Tags

NGSS.MS-PS1-1

How many protons does an aluminium atom have? (Use the image to help you)

• 27
• 14
• 40
• 13

How many neutrons does a sodium atom have? (Use the image to help you)

• 23
• 11
• 12
• 34

What atom matches this electron configuration?
1s² 2s² 2p⁶ 3s²

• Neon
• Magnesium
• Aluminum
• Potassium

Tags

NGSS.HS-PS1-1

How many valence electrons are represented here?

• 7
• 5
• 2
• 8

Tags

NGSS.HS-PS1-1