AP Atoms Molecules and Ions

Elements are made of 

• many types of atoms 
• the periodic table
• one type of atom 
• molecules 

Tags

NGSS.MS-PS1-1

Two or more atoms chemically bonded together are called a

• atom
• element
• molecule
• mixture

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NGSS.MS-PS1-1

Adding or subtracting neutrons (charge = 0, mass = 1) makes the element change into an...

• ion
• mixture
• isotope
• neutral atom

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NGSS.HS-PS1-8

The atomic number is equal to _.

• the number of protons and electrons
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons neutrons and electrons

The atomic mass is equal to _.

• the number of protons only
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons, neutrons, and electrons.

How many protons does this isotope of titanium have? Hint titanium has an atomic number of 22.

• 48
• 22
• 26
• 70

Tags

NGSS.MS-PS1-1

What is the net charge on the element shown above? 
(Calcium - atomic number 20)

• cation +1 charge
• cation +2 charge
• anion -1 charge
• anion -2 charge

Tags

NGSS.HS-PS1-1

Which atom has  4 neutrons?

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

Tags

NGSS.MS-PS1-1

How many neutrons does B (Boron) contain?

• 5
• 11
• 6
• 10.811

Tags

NGSS.HS-PS1-8

Two pure elements react to form a compound. One element is an alkali metal, X, and the other element is a halogen, Z. Which of the following is the most valid scientific claim that can be made about the compound?

• It has the formula XZ₂

• It does not dissolve in water.

• It contains ionic bonds.

• It contains covalent bonds.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-3