Chapter 11

If a gram of antimatter meets a kilogram of matter, the amount of mass to survive is

999 grams

Which of the following statements is true?

Molecules are the smallest subdivision of matter that still retain a substance's chemical properties

All atoms that make up a newborn baby were manufactured in

ancient stars

Which if the following is a mixture

cake air granite beach sand

Heavy atoms are appreciably larger in size than light atoms because the nuclei of heavy atoms have more

electric charge

Which is the lightest particle?

electron

The chemical properties of matter is due mostly to its

electrons

The volume of matter is mostly due to its

electrons

The air in this room has

energy wight mass

A granite block is mostly empty space because the atoms in the granite are

mostly empty space themselves

Mass number refers to the number of

nucleons in the nucleus

The number of protons in a neutral atom is balanced by an equal number of

orbital electrons

Brownian motion is caused by

particles larger than atoms bumping into them

The mass of matter is due mostly to its

protons

Which is the smallest particle?

quark

Atoms can be photographed by

scanning of electron microscopes electron beams

If we doubled the magnifying power of the most powerful optical microscope, we would

still not be able to see or photograph an atom

Compared to the energy it takes to separate oxygen and hydrogen from water, the amount of energy released when they recombine is

the same

Atoms heavier than helium were at one time manufactured by

thermonuclear fusion