C3 IGCSE Summary

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

Tags

NGSS.HS-PS1-1

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

What charge do electrons have?

• Positive

• Neutral

• Negative

Tags

NGSS.MS-PS2-3

How many electrons can the third shell have?

• Two

• Eight

• Five

• Three

Tags

NGSS.MS-PS1-1

Which two particles are contained in the nucleus of an atom?

• Protons and Neutrons

• Protons and Electrons

• Electrons and Neutrons

Tags

NGSS.MS-PS1-1

The atomic number identifies the number of __________.

• electrons

• atoms

• protons

• neutrons

How many protons does sulfur have?

• 32

• 16

• 48

• 12

Tags

NGSS.MS-PS1-1

Subatomic particle that has a positive charge

• electron

• poitron

• neutron

• proton

The name of this particle means indivisible and it is the building block of matter

• molecule

• compound

• atom

• isotope

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The center of an atom is called the ________________.

• electron cloud

• nucleus

• neutrion

• nuetron