Chemistry Semester 01 Final (Part One)

Front

What happens to a low-mass star after it exhausts its fuel?

Back

It becomes a red giant and then a white dwarf.

Front

What is an example of a chemical change?

Back

A copper penny turning greenish after a few years.

Front

What is the first step in the scientific method?

Back

Make an observation.

Front

What do scientists test by performing repeated experiments?

Back

Hypothesis.

Front

What is the next step after designing and building a prototype?

Back

Test the prototype.

Front

What is a red giant?

Back

A late stage in the life cycle of a low-mass star where it expands and cools.

Front

What is a white dwarf?

Back

A small, dense star that is the remnant of a low-mass star after it has exhausted its nuclear fuel.

Front

What is a supernova?

Back

A powerful and luminous explosion of a star, marking the end of its life cycle.

Front

What is a neutron star?

Back

A type of stellar remnant that is incredibly dense, formed from the remnants of a supernova.

Front

What is a black hole?

Back

A region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.