Which is an element?

A. A carbon dioxide molecule

B. A copper pipe

C. Phosphorous and lithium joined together

D. An alloy of copper and iron

How do forces between particles in gases compare to forces in the other states of matter? o a. the forces in gases are stronger than forces in solids but weaker than forces in liquids. o b. the forces in gases are weaker than forces in solids but stronger than forces in liquids. o c. the forces in gases are weaker than forces in solids and liquids. o d. the forces in gases are stronger than forces in solids and liquids. submit

Which of the following methods uses the decay of atomic particles in an object to find its exact age? a. fossil dating b. geologic dating c. radioactive dating d. relative dating

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver