Chemistry
Name ___________________________
Nuclear Unit
Per _______
Date ___________
Lecture Check-up: Radioactivity
Match the letter of the definitions on the right with the correct term on the left.
1.1. Nuclear radiation
a. Released from the nucleus when an alpha or a beta is emitted
2.2. Radioisotope
b. He nuclei; can be stopped by paper
3.3. Alpha particles
c. Source of more than ½ of background radiation
4.4. Gamma radiation
d. Atom with an unstable nucleus
5.5. Beta particles
e. form of ionizing radiation that results from nuclear changes
6.6. Radon
f. Electrons; can be stopped by Al sheet
Fill in the blanks:
7. Radiation from a microwave oven will cause atoms to _____________________________.
8. Sunburned skin is an example of overexposure to _____________________ radiation.
9. Alpha, beta, and gamma radiation, X-rays, and U-V are examples of ___________________
radiation.
10. Four factors that control our exposure to radiation are time, distance, containment and
______________________________.
Chemistry
Name ___________________________
Per _______
Date ___________
KEY
Unit 6A
Lecture Check-up: Radioactivity
Match the letter of the definitions on the right with the correct term on the left.
1.
E 11.
2.
D 12.
3.
B 13.
4.
A 14.
5.
F 15.
6.
C 16.
Nuclear radiation
a. Released from the nucleus when an alpha or a beta is emitted
radioisotope
b. He nuclei; can be stopped by paper
Alpha particles
c. Source of more than ½ of background radiation
Gamma radiation
d. Atom with an unstable nucleus
Beta particles
e. form of ionizing radiation that results from nuclear changes
Radon
f. Electrons; can be stopped by Al sheet
Fill in the blanks:
7. Radiation from a microwave oven will cause atoms to _____vibrate_______.
8. Sunburned skin is an example of overexposure to ____nonionizing_______ radiation.
9. Alpha, beta, and gamma radiation, X-rays, and U-V are examples of _ionizing____
radiation.
10. Four factors that control our exposure to radiation are time, distance, containment and
___shielding_______.