Quarter Exam of Grade 12 Physical Science

All are main elements except?

• Lithium

• Berrylium

• Argon

• Hydrogen

The formation and groupings of the celestial bodies are formed in what theory?

• Steaddy State

• Steaady Sttate

• Steady State

• Staedy State

Tags

NGSS.MS-ESS1-2

He is known on his work using Valence electron?

• Mendeleeve

• Meyer

• Moseley

• Newlands

Tags

NGSS.MS-PS1-1

Carbon plus Helium Produces

Oxygen plus Helium

Neon plus Helium

Magnesium plus Helium?

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Calcium plus Helium

Tags

NGSS.MS-PS1-2

If the atomic Number of Carbon is 6 then its proton is?

what is the valence electron of Flourine