AP Chemistry Practice Test

Which element has an atomic number of 20?

• Sodium

• Magnesium

• Potassium

• Calcium

Tags

NGSS.MS-PS1-1

Which element has 19 electrons?

• Sodium

• Magnesium

• Potassium

• Calcium

What chart is used to organize the elements by atomic number?

• Atomic Table

• Periodic Table

• Kitchen Table

What is an atom?

• Smallest particle of a substance

• Raw materials made of only one kind of atom

Tags

NGSS.MS-PS1-1

What is a compound?

• Substances with molecules that have atoms from different elements

• Two or more atoms joined together

Tags

NGSS.MS-PS1-1

What is an element?

• Smallest particle of a substance

• Raw materials made of only one kind of atom

What is a molecule?

• Substances with molecules that have atoms from different elements

• Two or more atoms joined together

Tags

NGSS.MS-PS1-1

What is a electron?

• Particle in an atom with a POSITIVE charge

• Particle in an atom with a NEGATIVE charge

• Particle in an atom with a NO charge

Tags

NGSS.MS-PS2-3

What is a neutron?

• Particle in an atom with a POSITIVE charge

• Particle in an atom with a NEGATIVE charge

• Particle in an atom with a NO charge

What is a proton?

• Particle in an atom with a POSITIVE charge

• Particle in an atom with a NEGATIVE charge

• Particle in an atom with a NO charge