A tuber of cassava can be processed into powder. This explains the fact that
matter can change sponteneously from one state to another
matter cannot be destroyed
force is required to change matter from one state to another
matter is made up of tiny particles
Correct answer is D
No explanation has been provided for this answer.
12 and 6
14 and 7
16 and 8
19 and 8
Correct answer is C
No explanation has been provided for this answer.
boron rods
concrete shield
graphite rods
uranium rods
Correct answer is A
No explanation has been provided for this answer.
Which of the following is usually used to cause fission in an atomic reactor?
Alpha particles
beta particles
electrons
Neutrons
Correct answer is D
No explanation has been provided for this answer.
If a radioactive atom emits a beta particle, Its mass number
increases by one
remains the same
decreases by one
increases by two
Correct answer is B
No explanation has been provided for this answer.