ECQ'S Review: Atoms and Elements

What is the smallest particle of an element that has the chemical properties of that element?

• Molecule

• Atom

• Compound

• Electron

Protons have what type of charge?

• Negative

• Neutral

• Positive

• No charge

Electrons have a __________ charge.

• Positive

• Neutral

• Negative

• No charge

What will two particles with opposite charges do?

• Repel each other

• Nothing

• Cancel each other's charge

• Attract each other

What will two particles with the same charge do?

• Attract each other

• Cancel each other's charge

• Nothing

• Repel each other

What does the atomic number tell us?

• The number of neutrons in an atom

• The number of protons in an atom

• The atomic mass of an atom

• The number of electrons in an atom

Can atoms of the same element have different numbers of neutrons?

• Yes, they are called isotopes

• No, they are called isotopes

• Yes, they are called allotropes

• No, they are called allotropes

How do we find the number of electrons in an atom?

• By subtracting the number of neutrons from the atomic mass

• By adding the number of protons and neutrons

• By looking at the atomic number

• By calculating the atomic mass

1. Which part of an atom has a positive charge?

• 1. Protons

  
  

• Neutrons

• Electrons

• Microns

1. The number of protons in one atom of an element is the ____________.

• 1. Atomic Box

• 1. Atomic Symbol

• 1. Atomic Mass

• 1. Atomic Number