Physics Ch.11 Clicker Questions

There are about as many atoms of air in our lungs at any moment as there are breaths of air in the atmosphere of:

the whole world.

To change mercury into gold, a pair of protons must be:

NOT removed from the mercury nucleus. NOT added to the mercury nucleus. Neither of these. If anything, ONE proton would be removed from mercury to match gold's atomic number Hg (80p) to Au (79p)

Nuclei of atoms that make up a newborn baby were made in:

ancient stars.

Which of these forces determines the chemical properties of an atom?

electrical force

The volume of matter comes mostly from its:

electrons (electron cloud)

Which has the greatest number of protons in its nucleus?

lead 82 protons (atomic number)

Solid matter is mostly empty space. The reason solids don't fall through one another is because:

of electrical forces. (repel each other)

The weight of matter comes mostly from its:

protons

Brownian motion has to do with the

random motions of atoms and molecules.

The factor that determines whether a substance is in the solid, liquid, gaseous, or plasma state is its:

temperature and pressure.

What makes an element distinct?

the number of protons (each has own place on Periodic Table)

Which of the following statements is true?

there are only about 100 different kinds of atoms that combine to form all substances