What is the chemical element cadmium mostly used for?
Correct!
Wrong!
-
What element is used as a filler gas in fluorescent and incandescent light bulbs?
Correct!
Wrong!
-
What element is the basis for organic chemistry, as it occurs in all living organisms?
Correct!
Wrong!
-
The Moon directly or indirectly affects which of these?
Correct!
Wrong!
-
What gas is necessary for respiration and aids fires in burning?
Correct!
Wrong!
-
The movement of particles from an area of high concentration to low is what?
Correct!
Wrong!
-
Velocity is another name for what?
Correct!
Wrong!
-
What are the best absorbers of thermal radiation?
Correct!
Wrong!
-
Which of these is not part of an atom?
Correct!
Wrong!
-
Which of these used to be classed as a planet?
Correct!
Wrong!
-
