The Nucleus

Front

In chemistry, how many types of subatomic particles are considered to form everything?

Back

three

Front

What is defined as "a well-tested set of ideas that explains many disparate observations"?

Back

a theory

Front

Which scientist mathematically proved the existence of atoms and molecules in 1905? Options: Robert Brown, Albert Einstein, Antoine Lavoisier, Ernest Rutherford

Back

Albert Einstein

Front

The random motion of particles suspended in a fluid is called _____

Back

Brownian motion

Front

Origin of the word "atom"

Back

Greek for "indivisible"

Front

The proton is _____

Back

heavy and positively charged

Front

The neutron is _____

Back

heavy and neutral

Front

The electron is _____

Back

light and negatively charged

Front

The electron is about _____ times less massive than the proton or neutron.

Back

1800

Front

Protons and neutrons hang out in the nucleus, and are referred to as _____

Back

nucleons