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Helpppp Pleaseee

  • #1
Helpppp!! Pleaseee

Today we had a sub teacher. This worksheet is due tomorrow. Is there any help I can get? Not just answers but explainations?


Confused on a couple questions:

1. The splitting of a nucleus of an atom to obtain energy is called:
fusion
fission
alpha numeric
sunlight

2. Which type of nuclear reaction could produce a virtually limitless and clean source of energy?
fusion
fission
alphanumeric
nuclear detonation

3. Which of the following is a use for nuclear energy?
-Making large explosions
-Injecting radiactive isotopes into humans
-Carbon dating really old things

4.The form of radiation that is a particle consisting of two neutrons and two protons is:
-alpha
-beta
-gamma
-lighta

7. Why is the strong nuclear force needed to keep the nucleus together?
-Protons and electrons repel with each other.
-Protons repel each other
-Protons and electrons attract each other
-Neutrons and protons attract each other

8. The energy involved in a chemical change is ___ than that of a phase change.
-more
-less
-about the same
-none are correct

9. In a ____ change, the molecules and atoms retain their identity but change state.
-phase
-chemical
-nuclear
-positional

10. In a fusion reaction what happens to the missing mass?
- It is converted to steam
- It is converted to ice
- It is converted to energy
- It disappears and is lost for useful purposes

11. The atomic change that produces the largest amount of energy is
- chemical
- physical
- phase
- nuclear

12. When does beta decay occur?

- When an atom has far greater neutrons than protons
- When an atom has far greater protons than neutrons
- When an atom has far greater electrons than protons
- When an atom has far greater protons than electrons
- When an atom has far greater electrons than neutrons

13. Gamma rays can be completely blocked by:
- sheet of paper
- cubed of tin foil
- cubed concrete
- lead pencil
 

Answers and Replies

  • #2
cristo
Staff Emeritus
Science Advisor
8,107
73
Please show your work before we can help. What thoughts do you have on the questions?
 
  • #3
1. The splitting of a nucleus of an atom to obtain energy is called:
fusion
fission
alpha numeric
sunlight

2. Which type of nuclear reaction could produce a virtually limitless and clean source of energy?
fusion
fission
alphanumeric
nuclear detonation

3. Which of the following is a use for nuclear energy?
-Making large explosions
-Injecting radiactive isotopes into humans
-Carbon dating really old things

4.The form of radiation that is a particle consisting of two neutrons and two protons is:
-alpha
-beta
-gamma
-lighta

7. Why is the strong nuclear force needed to keep the nucleus together?
-Protons and electrons repel with each other.
-Protons repel each other
-Protons and electrons attract each other
-Neutrons and protons attract each other

8. The energy involved in a chemical change is ___ than that of a phase change.
-more
-less
-about the same
-none are correct

9. In a ____ change, the molecules and atoms retain their identity but change state.
-phase
-chemical
-nuclear
-positional

10. In a fusion reaction what happens to the missing mass?
- It is converted to steam
- It is converted to ice
- It is converted to energy
- It disappears and is lost for useful purposes

What is a fusion reaction?
11. The atomic change that produces the largest amount of energy is
- chemical
- physical
- phase
- nuclear

I think nuclear is strong. I'm unsure.

12. When does beta decay occur?
- When an atom has far greater neutrons than protons
- When an atom has far greater protons than neutrons
- When an atom has far greater electrons than protons
- When an atom has far greater protons than electrons
- When an atom has far greater electrons than neutrons


13. Gamma rays can be completely blocked by:
- sheet of paper
- cubed of tin foil
- cubed concrete
- lead pencil

I think concrete. The other answers isnt as strong.


*I would like someone to kind of explain a little bit of each to me if possible. My sub handed a worksheet out today, no text book to refer to nothing. So I'm really stuck.

Also I can define the words to understand more of the question.
 
  • #4
Do you have a textbook? Wikipedia would be able to help with most, as well. I am sure there are lots of people that could explain each process in detail very well, but aside from it being pretty tedious, the text book has already done it! :P

Here is one to get you started. http://en.wikipedia.org/wiki/Nuclear_fission
 
  • #6
cristo
Staff Emeritus
Science Advisor
8,107
73
surfergirl.. I think you should put some effort in. You should at least be able to narrow down most of the questions to a maximum of 2 answers.

For example: Q1, do you think that sunlight splits an atom?
 
  • #7
chemisttree
Science Advisor
Homework Helper
Gold Member
3,303
308
This is pretty funny!
 

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