atomic structure interactive notes H chem

Multiple Choice

In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagram represents a mixture?

• I

• II

• III

• IV

Multiple Choice

Which of the following represents a compound?

• Diagram (a)

• Diagram (b)

• Diagram (c)

• All of the diagrams represent the parts of a compound.

Multiple Choice

Which diagram represents an element?

• Diagram (a)

• Diagram (b)

• Diagram (c)

• None of the diagrams represent the parts of an element.

Multiple Select

What particle(s) are found in the nucleus

• protons

• neutrons

• electrons

Multiple Choice

Which statement is correct?

• Protons have a positive charge and are found outside the nucleus

• neutrons have a negative charge

• electrons have a negative charge and are found outside the nucleus

Multiple Choice

How many protons are in the nucleus of a Calcium (Ca) atom Calcium is an alkaline earth methal

• 40.008

• 2

• 4

• 20

Multiple Choice

How many electrons does a neutral potassium (K) atom contain? (click to see image)

• 19
• 39
• 39.0983

In your notebook:

Record the nuclear notation, number of protons, neutrons, and electrons for the two isotopes of oxygen:

Oxygen -16 and Oxygen -18

Multiple Choice

How are the isotopes of Oxygen 16 and Oxygen -18 different?

• number of protons

• number of neutrons

• number of electrons

Multiple Choice

which Lithium isotope has  4 neutrons?

• Li-6
• Li-7
• Li-8
• they have the same # of neutrons

Multiple Choice

An atom has 12 protons and 13 neutrons in its nucleus. Which is the correct symbol?

Match

Match the following

• number of protons

• number of neutrons

• mass number

18

22

40

• 18

• 22

• 40

Multiple Choice

A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?

• Br^-1

• Br⁺¹

• Br⁺⁷

• Br^-7

Multiple Choice

What is the ion that has 12 protons and 10 electrons?

• Mg+2

• Mg-2

• Ne+2

• Ne-2

Multiple Choice

What is the ion formed from Sulfur? If it has 6 valence electrons.

• S⁺²

• S^-2

• S⁺⁶

• S^-6