Chapter 11 Homework Physics 1310

Who advanced the idea of atoms in the early 1800s?

What causes dust particles and tiny grains of soot to move with Brownian motion?

Who first explained Brownian motion and made a convincing case for the existence of atoms?

How does the approximate number of atoms in the air in your lungs compare with the number of breaths of air in Earth's atmosphere?

Are most of the atoms around us younger or older than the Sun?

Why can atoms be seen with an electron beam?

Why can't atoms be seen with a powerful optical microscope?

Where in the atom is most of its mass concentrated? What is this mass composed of?

What is meant by the term nucleon?

How does the electric charge of a proton compare with the electric charge of an electron?

Since atoms are mostly empty space, why don't we fall through a floor we stand on?

What element has the lightest atoms?

What is the most abundant element in the known universe?

How are most of the elements with nuclei heavier than those of hydrogen and helium formed?

What are the five most common elements in the universe?

Which of the following are negatively charged?

What does the atomic number of an element tell you about the element?

How many shells are represented in the presently known periodic table?

Why aren't heavier elements much larger than lighter elements?

Which of the following is an element?

How does one isotope differ from another?

The periodic table of the elements is a list of

What is a compound? Cite two examples.

What is a mixture? Cite two examples.

How does a molecule differ from an atom? Give an example.

Which of these atoms has the largest number of neutrons in the nucleus?

What occurs when a proton and an antiproton meet?

What is the evidence that dark matter exists?

The number of atoms in a common water molecule is

The charge in the nucleus of an antimatter hydrogen atoms is

Dark matter is considered to be

If no molecules in a body could escape, would the body have any odor?

To become a negative ion, does an atom lose or gain an electron?

To become a positive ion, does an atom lose or gain an electron?

Brownian Motion is caused by

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

Nuclei of atoms that make up a newborn baby were manufactured in

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

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

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

Atoms can be photographed by

Which of these statements is true?

The difficulty of taking a photograph of an atom with light is

The element gold contains

Atoms heavier than helium were at one time manufactured by

Which is the lightest particle?

An element is distinct because of its number of

Which is the smallest particle?

Although solid matter is mostly empty space, we don't fall through the floor because

A force that determines the chemical properties of an atom is

Atomic number refers to the number of

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

Which of the following elements has the most mass?

The volume of matter is due mostly to its

Which of these has the greatest number of protons in its nucleus?

Which of these atoms has the greatest amount of electrical charge in its nucleus?

Which of these atoms has the greatest number of electrons?

Two protons removed from an oxygen nucleus result in

A pair of hydrogen nuclei fused together produces

A pair of helium nuclei fused together produces

One neutron added to a helium nucleus results in

If a nitrogen atom and a slightly heavier oxygen atom have equal kinetic energies, which has the greater average speed?

Heavier atoms are not proportionally larger than lighter atoms due to the greater number of protons

The chemical properties of matter are due mostly to their

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?

Heavy atoms are not appreciably larger in size than light atoms because the nuclei of heavy atoms have more

Which contains more atoms?

An isotope is simply an atom that

mass number depends of the number of

A nucleon has the mass of

What is the molecular mass of a water molecule?

Which is NOT a compound?