Physical Science Final Exam Review

Front

What is a pure compound?

Back

A pure compound is a substance formed when two or more elements are chemically bonded together in a fixed ratio, resulting in unique properties that differ from the individual elements.

Front

How does gravity affect weight?

Back

Weight is the force exerted by gravity on an object. It depends on the mass of the object and the acceleration due to gravity. While mass remains constant, weight can change with variations in gravitational force.

Front

Why do noble gases rarely react with other elements?

Back

Noble gases have complete outermost energy levels, which makes them stable and less likely to form chemical bonds with other elements.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both the speed and the direction of motion.

Front

What characterizes a covalent bond?

Back

A covalent bond is formed when two atoms share one or more pairs of electrons, typically between nonmetals.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by increasing atomic number, which shows the relationships between different elements.

Front

What is mass?

Back

Mass is a measure of the amount of matter in an object, typically measured in grams or kilograms, and it does not change regardless of location.

Front

What is weight?

Back

Weight is the force exerted on an object due to gravity, calculated as the product of mass and gravitational acceleration (W = m * g).

Front

What is an ionic bond?

Back

An ionic bond is formed when one atom donates an electron to another atom, resulting in the attraction between positively and negatively charged ions.

Front

What are the properties of metals?

Back

Metals are typically shiny, malleable, ductile, good conductors of heat and electricity, and have high melting and boiling points.