atoms review

Atoms Review

Oh no! I lost an electron

Are you sure?I’m positive

A neutron walks into a restaurant and orders a couple of cokes. As she is about to leave, she asks the waiter how much she owes. The waiter replies, "For you, No Charge!!!"

1801701601501401301201101009080706050403020109876543210

This screen will disappear in 3 minutes.

SecondsRemaining.

Describe the three kinds of particles found in atoms.

Where are they located & what are their charges?

• Protons – in the nucleus, positive charge

• Neutrons – in the nucleus, no charge

• Electrons – outside the nucleus, negative charge

1801701601501401301201101009080706050403020109876543210You haveYou have Seconds left.Seconds left.

Identify the four parts of the atom that are pointed out by arrows in the diagram above.

Describe the electrical charges of the structures that are labeled 1, 2, and 3 in the diagram.

1

2 3

1 is the electron and it is negative

2 is the proton and it is positive

3 is the neutron and it is neutral

4 is the nucleus

1801701601501401301201101009080706050403020109876543210Seconds Seconds Left:Left:

A stable carbon atom has the following parts:

– 6 protons

– 6 neutrons

– 6 electrons

Describe the location of each of these parts in a carbon atom.

Protons and neutrons are found in the nucleus of the atom, at the very center. Electrons are

found in an electron cloud that surrounds the nucleus.

1801701601501401301201101009080706050403020109876543210Time left: Seconds

Define these terms:

Atom

Ion

ATOM – the smallest part of matter that has the properties of the matter

ION – an atom that has lost or gained electrons

18018017017016016015015014014013013012012011011010010090908080707060605050404030302020101099887766554433221100

Seconds Seconds Remaining:Remaining:

What are the biggest parts of an atom?

Protons & Neutrons

1801701601501401301201101009080706050403020109876543210Seconds Seconds Left:Left:

A stable helium atom contains 2 protons, 2 neutrons, and 2 electrons.

Use beads and labels to create a diagram of a stable helium atom. Be sure to include the protons, neutrons, electrons, and nucleus of the atom in your diagram.

Electrons

Protons

Neutrons