8th Grade MidTerm Review 2004

Front

What is the balanced equation for the reaction of NaOH with H₃PO₄?

Back

NaOH + H₃PO₄ → NaH₂PO₄ + H₂O

Front

What is produced when 20 grams of NaOH reacts with 49 grams of H₃PO₄?

Back

60 grams of NaH₂PO₄ are produced.

Front

What principle states that the mass of the products will equal the mass of the reactants in a chemical reaction?

Back

Law of Conservation of Mass.

Front

What causes Earth to experience different seasons throughout the year?

Back

The tilt of Earth's axis as it revolves around the Sun.

Front

What are Neap Tides?

Back

Tides that occur when the Earth, Moon, and Sun are at right angles to each other, resulting in lower high tides and higher low tides.

Front

What are Spring Tides?

Back

Tides that occur when the Earth, Moon, and Sun are aligned, resulting in higher high tides and lower low tides.

Front

What is Newton's First Law of Motion?

Back

An object at rest will remain at rest, and an object in motion will continue in motion at a constant velocity unless acted upon by a net external force.

Front

What is Newton's Second Law of Motion?

Back

The amount of force is equal to mass times acceleration (F = ma).

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

What is the formula for calculating the mass of a substance in a chemical reaction?

Back

Mass of reactants = Mass of products.