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2019

https://www.qwivy.com/file/66386529/Nuclear-ReactionsSEpdf/

Name:

 Alexa Nissim

Date: 6420

Student Exploration: Nuclear Reactions

[Note to teachers and students: This Gizmo was designed as a follow-up to the Nuclear Decay

Gizmo. We recommend doing that activity before trying this one.]

Vocabulary: chain reaction, CNO cycle, catalyst, deuterium, electron volt,

fission, fusion, isotope, nuclear reaction, positron, positron emission, protonproton chain

Prior Knowledge Questions (Do these BEFORE using the Gizmo.)

The chart to the right gives the isotope

name, element name, number of

protons, and number of neutrons of

three isotopes.

1. What do you notice about the

isotope number and the sum of

protons and neutrons?

The isotope number is equal to the sum of the protons and neutrons.

2. The element symbol for uranium-238 is . This means U-238 has a total

mass of 238 and contains 92 protons. Write the element symbols for the

isotopes in the table:

Hydrogen-1

 H Carbon-12

 E

Uranium-235

Gizmo Warm-up

The Nuclear Reactions Gizmo simulates a particle accelerator.

Particle accelerators speed up atoms to very high velocities,

then crash the atoms together with enough energy to cause

changes called nuclear reactions. There are three particle

beams available in this Gizmo, protons, neutrons, and

helium-3 nuclei.

1. Click Fire Proton to engage the first particle beam.

What happens? Proton joins nucleus

2. Colliding particles don’t always react. Click Reset, and then click Fire neutron.

Isotope Protons Neutrons

Hydrogen1

1 0

Carbon-12 6 6

Uranium- 92 143

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This study source was downloaded by 100000828897939 from qwivy.com on 07-13-2021 03:44:59 GMT -05:00

2019

https://www.qwivy.com/file/66386529/Nuclear-ReactionsSEpdf/

A. Does a reaction occur? No

B. Explain: Neutron traveled through the nucleus

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