Electrons and Atoms

Atoms; their identity and chemical reactivity

Some text here about the topic of discussion

Multiple Choice

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Multiple Choice

Subatomic particles with a positive charge

• neutrons

• atomic mass

• protons

• isotopes

Multiple Choice

Measure mainly of the nuclear particles: protons + neutrons

• Subatomic Particles

• Atomic Number

• Atomic Mass

• Gluons

Multiple Choice

Value representing the number of protons in an element

• Atomic Mass

• Mass Number

• Valence Electrons

• Atomic Number

Valence electrons

What are valence electrons?

• determines the atoms chemical property

• in charge of the Chemical reactivity

• the electrons in the outermost shell

• Atoms want to have a stable outer shell of electrons

Multiple Choice

How many valence electrons do the elements in group 15 (group 5A) have?

• 1

• 5

• 15

• 8

Multiple Choice

Electrons occupying the outermost shell of an atom

• Ions

• Cation

• Valence Electrons

• Anion

Multiple Choice

• 2

• 8

• 3

• 13

Multiple Choice

• 12

• 7

• 8

• 14

Multiple Choice

Valence electrons are the...

• Innermost electrons

• Middle electrons

• Outermost electrons

• Any electrons

Multiple Choice

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7