PHYS 101 Unit 1

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

999 grams

The synthesis of a large collection of information that contains well-tested and verified hypotheses about certain aspects of the world is known as a scientific

Theory

What is the molecular mass of a water molecule?

18 amu

An atomic mass unit (amu) is 1/12 the mass of

a carbon atom

Using science to analyze nature

adds depth to our understanding and therefore adds to our appreciation of nature.

If a pair of helium nuclei are fused together, the result is

beryllium

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.

How many different elements are in a water molecule? (H2O)

two

The chemical properties of matter come mostly from its

electrons.

The scientific method is a method for

gaining new knowledge

If one neutron is added to a helium nucleus, the result is

helium

In science, a educated guess is a

hypothesis

Which subatomic particles are electrically neutral?

neutrons

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

of electrical forces

Brownian motion has to do with the

random motions of atoms and molecules

The statement, "There are regions beneath Earth's crust that will always be beyond the reach of scientific investigation," is a

speculation

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.

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

temperature.

If experimental findings are not reproducible,

the results are not considered valid