PSci Fall 23 Final

Front

What is average velocity?

Back

Average velocity is the total displacement divided by the total time taken, and it includes direction.

Front

What is an insulator?

Back

An insulator is a material that does not allow electricity to flow through it easily.

Front

What are valence electrons?

Back

Valence electrons are the electrons located in the outermost energy level of an atom, which are involved in chemical bonding.

Front

How is a heterogeneous mixture defined?

Back

A heterogeneous mixture is a combination of substances that remain distinct and can be physically separated.

Front

What are the characteristics of a solid?

Back

A solid has a definite shape and volume, with particles that are closely packed together.

Front

What is the formula for calculating average velocity?

Back

Average velocity = Total displacement / Total time.

Front

What is the difference between a conductor and an insulator?

Back

A conductor allows electricity to flow through it easily, while an insulator does not.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout.

Front

What happens during the phase change from solid to liquid?

Back

During melting, a solid absorbs heat and changes into a liquid.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element.