Physics Ch. 11
Compared to the mass of a hydrogen atom, the mass of an oxygen atom is
16 times as great
What is the molecular mass of a water molecule?
18 amu
How many protons should be added to the nuclei of oxygen atoms so the resulting gas will glow red when an electric current is in it?
2
How many atoms are in this carbohydrate molecule, C6H12O6?
24
If a gram of antimatter meets a kilogram of matter, the amount of mass to survive is
999 grams
Which of these investigators did NOT contribute to our knowledge of atoms?
Aristotle
A molecule has
all of the above
An atomic model of the atom is
all of the above
The air in this room has
all of the above
Nuclei of atoms that make up a newborn baby were manufactured in
ancient stars
If an astronaut landed on a planet composed of antimatter, there would be an explosion and the
astronaut and an equal amount of plant antimatter would bother annihilate
A pair of helium nuclei fused together produces
beryllium
A nucleon has a mass of about
both are the same
Atoms can be photographed by
both of these
Two protons removed from an oxygen nucleus result in
carbon
A force that determines the chemical properties of an atom is
electrical forces
The chemical properties of matter are due mostly to their
electrons
The volume of matter is due mostly to its
electrons
An isotope is simply an atom that
has different numbers of neutrons for the same element
A pair of hydrogen nuclei fused together produces
helium
One neutron added to a helium nucleus results in
helium
Which of the following is an inert gas?
helium
The electrical force is stronger between the nucleus and an inner electron for atoms of
high atomic number
Which of these has the greatest number of protons in its nucleus?
lead
A granite block is mostly empty space because the atoms in the granite are
mostly empty space themselves
Which of the following are electrically neutral?
neutrons
Although solid matter is mostly empty space, we don't fall through the floor because
of electrical forces
An element is distinct because of its number of
protons
Atomic number refers to the number of
protons in the nucleus
Heavier atoms are not proportionally larger than lighter atoms due to the greater number of protons
pulling surrounding electrons into tighter shells
Which is the smallest particle?
quark
What did Robert Brown see in his microscope?
random motions
When carbon and oxygen atoms combine, energy is
released by the reaction
Assuming all the atoms exhaled by Julius Caesar in his last dying breath are still in the atmosphere, we breathe in at least one of them each
single breath
If we doubled the magnifying power of the most powerful optical microscope in the world, we would
still not be able to see or photograph an atom
Compared to the atoms that make up the body of an elderly person, the atoms that make up the body of a newborn baby are
the same age
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
Atoms heavier than helium were at one time manufactured by
thermonuclear fusion
What is the total number of individual atoms in a water molecule?
three
How many different kinds of elements are in a water molecule?
two
Which of the following elements has the most mass?
uranium
Which of these atoms has the greatest amount of electrical charge in its nucleus?
uranium
Which of these atoms has the greatest number of electrons?
uranium
The chance that at least one of the atoms exhaled in your previous breath will be inhaled in your next breath is
very high
When oxygen and hydrogen gases combine, the result is
water