Physical Science Final Review

Front

What type of footwear is best in the laboratory?

Back

Closed-toed shoes are the best type of footwear in the laboratory to protect feet from spills and accidents.

Front

What is the maximum number of electrons that can occupy the 2nd shell of an atom?

Back

The maximum number of electrons that can occupy the 2nd shell of an atom is 8.

Front

Which element is most likely to gain electrons in a chemical reaction?

Back

Bromine (Br) is most likely to gain electrons in a chemical reaction due to its high electronegativity.

Front

What does it mean for a car to have constant velocity?

Back

A car with constant velocity has zero acceleration, meaning its speed and direction remain unchanged.

Front

What type of mixture is created when water, lemon juice, and sugar are blended together?

Back

The mixture created is a homogenous mixture, where the components are evenly distributed.

Front

Define a compound in chemistry.

Back

A compound is a substance formed when two or more elements chemically bond together in a fixed ratio.

Front

What is the difference between a homogeneous mixture and a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has distinct, separate components.

Front

What is the principle of conservation of mass?

Back

The principle of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is an ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net electrical charge.

Front

What is the significance of the atomic number?

Back

The atomic number represents the number of protons in an atom's nucleus and determines the element's identity.