Investigate Part B: Chapter 2 Section 9

Match

Match the following

• a neutral particle located in the nucleus of an atom.

• • either a proton or neutron in the nucleus of an atom. 

• the three kinds of particles that make up atoms: protons, neutrons, and electrons.

• • atoms of the same element that have different masses due to a different number of neutrons.

• • the force of attraction between two bodies due to their masses.

neutron:

• nucleon:

subatomic particles:

• isotope:

• gravity:

• neutron:

• • nucleon:

• subatomic particles:

• • isotope:

• • gravity:

Match

Match the following

• a force that is associated with nuclear decay and is one of the four fundamental forces.

• an atom that has an unstable nucleus and will emit alpha, positron, or beta particles in order to achieve a more stable nucleus.

• nuclei of lighter atoms combining to form nuclei with greater mass and releasing a large amount of energy.

weak force:

radioactive:

fusion:

• weak force:

• radioactive:

• fusion:

Match

Match the following

• the process of breaking apart nuclei into smaller nuclei with the release of a large amount of energy.

• a process, such as fission, fusion, or radioactive decay, in which the structure of an atomic nucleus is altered through release of energy or mass or by being broken apart.

• the length of time it takes for half of any quantity of a given radioactive isotope to decay.

fission:

nuclear reaction:

half-life:

• fission:

• nuclear reaction:

• half-life:

Open Ended

1a. Record your observations.

Multiple Choice

1b. Is the force between the two strips of tape attractive or repulsive?

• Attractive
• Repulsive

Open Ended

2a. Make a second set of strips as in Step 1.

Predict what you think will happen if the two top strips are picked up, one from each set and brought toward each other. Record your prediction.

Open Ended

2b. Record your observations.

Multiple Choice

2c. Was the force attractive or repulsive?

• attractive
• repulsive

Open Ended

2d. Predict what you think will happen if the two bottom strips of tape are picked up and brought toward each other. Record your prediction.

Open Ended

2e. Record your observations.

Multiple Choice

2f. Was the force attractive or repulsive?

• attractive
• repulsive

Multiple Choice

3b. Is the force between two negative strips repulsive or attractive?

• attractive
• repulsive

Multiple Choice

3c. When a positive and a negative strip come near each other, is the force attractive or repulsive?

• attractive
• repulsive

Multiple Choice

4a. What kind of electric force (attractive or repulsive) exists between the nucleus of an atom and its electrons?

• repulsive

• attractive

Multiple Choice

4b. What kind of electric force exists between pairs of protons in the nucleus?

• repulsive

• attractive

Multiple Choice

5. 5a. Choose the coulomb electrostatic force for the following:

electron-proton

• attractive

• repulsive

• none

• strong-attractive

Multiple Choice

5. 5a. Choose the strong, nuclear force for the following:

electron-proton

• attractive

• repulsive

• none

• strong-attractive

Multiple Choice

5a. Choose the coulomb electrostatic force for the following:

electron-neutron

• attractive

• repulsive

• none

• strong-attractive

Multiple Choice

5a. Choose the strong nuclear force for the following:

electron-neutron

• attractive

• repulsive

• none

• strong-attractive

Multiple Choice

5a. Choose the coulomb electrostatic force for the following:

proton-proton

• attractive

• repulsive

• none

• strong-attractive

Multiple Choice

5a. Choose the strong, nuclear force for the following:

proton-proton

• attractive

• repulsive

• none

• strong-attractive

Multiple Choice

5a. Choose the coulomb electrostatic force for the following:

proton-neutron

• attractive

• repulsive

• none

• strong-attractive

Multiple Choice

5a. Choose the strong, nuclear force for the following:

proton-neutron

• attractive

• repulsive

• none

• strong-attractive

Multiple Choice

5a. Choose the coulomb electrostatic force for the following:

neutron-neutron

• attractive

• repulsive

• none

• strong-attractive

Multiple Choice

5a. Choose the strong, nuclear force for the following:

neutron-neutron

• attractive

• repulsive

• none

• strong-attractive

Multiple Choice

6a) What is the total mass number on each side?

• 236 amu

• 246 amu

• 372 amu

• 245 amu

Multiple Choice

6a) Is the mass number (the top number) conserved on both sides of the reaction?

• No
• Yes
• Sometimes
• Rarely

Multiple Choice

6b) What is the total atomic number on each side?

• 92

• 42
• 24
• 18

Multiple Choice

6b) Is the atomic number (the bottom number) conserved on both sides of the reaction?

• Yes

• No

• Sometimes

• Rarely

Multiple Choice

6c) Why does the neutron have a mass number of 1?

• The neutron has a mass number of 1 because it is made up of 1 proton and 1 electron.
• The neutron has a mass number of 1 because it is the lightest subatomic particle.
• The neutron has a mass number of 1 because it has almost the same mass value as a proton.

• The neutron has a mass number of 1 because it is the most stable subatomic particle.

Multiple Choice

6d) Why is the atomic number of a neutron equal to 0?

• Neutrons do not have a charge.
• Neutrons are composed of protons.
• Neutrons have an atomic number of 1.
• Neutrons have a positive charge.

Multiple Choice

7a) Is the atomic mass number conserved on both sides of the reaction?

• Rarely
• Sometimes
• No, the mass is different on both sides.

• Yes, the mass on both sides is 6.

Multiple Choice

7b) Is the atomic number conserved on both sides of the reaction?

• Only in certain reactions
• No, the atomic number on both sides is different.

• Sometimes
• Yes, the atomic number on both sides is 4.

Multiple Choice

8a) Which shows how a proton (charge = +1) can be made up of a combination of up and down quarks?

• Proton = down quark + down quark + up quark
• Proton = up quark + down quark + strange quark
• Proton = up quark + up quark + down quark

• Proton = charm quark + charm quark + strange quark

Multiple Choice

8b) Which shows how a neutron (charge = 0) can be made up of a combination of up and down quarks?

• Neutron = up quark + up quark + up quark

• Neutron = down quark + down quark + down quark

• Neutron = down quark + down quark + up quark

• Neutron = up quark + up quark + down quark