Physical Science 1st Semester Exam Review

Front

What are the advantages of nuclear power?

Back

High energy production, low greenhouse gas emissions, and continuous power generation.

Front

All changes of the state of matter require ____________.

Back

energy

Front

Substance that dissolves the solute.

Back

solvent

Front

What is an isotope?

Back

Atoms with the same number of protons but different number of neutrons.

Front

According to the octet rule most elements need _______ valence electrons.

Back

8

Front

What is the definition of a solution?

Back

A homogeneous mixture of two or more substances.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is kinetic energy?

Back

The energy of an object due to its motion.

Front

What is potential energy?

Back

The energy stored in an object due to its position or arrangement.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.