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If an atom has two protons and three electrons, then the atom IS

• Positively charged

• Negatively charged

• Non reactive

• Neutral

A Nitrogen atom has 7 neutrons, 7protons, and 7 electrons. What is the atomic mass of nitrogen?

• 7

• -7

• 15

• 14

A Fluorine (F) atom has 10 neutrons, 9 protons, and 9 electrons. What is the atomic mass of Fluorine?

• 10

• 9

• 19

• 28

How Many neutrons are in atom?

• 30

• 35

• 36

• 65

Elements in the same group have the most

• Physical and chemical properties

• Different electrons

• Different similar and chemical properties

• Same ions

Elements in the same group have the most

• Physical and chemical properties

• Different electrons

• Different similar and chemical properties

• Same ions

Elements in the same group have the most

• Physical and chemical properties

• Different electrons

• Different similar and chemical properties

• Same ions

Elements in group 1 are

• Nonreactive

• Very reactive

• Mildly reactive

Elements in group 18 are

• Nonreactive

• Very reactive

• Mildly reactive

What is this substance?

• Element

• Compound

• Mixture