Physical Science Final Exam Review

Front

What type of reaction is represented by the equation: 3Ca + 2AlCl3 → 3CaCl2 + 2Al?

Back

Single displacement reaction.

Front

If there are 6 grams of reactant, how many grams of products are produced by the decomposition of the reactant?

Back

6 grams.

Front

What is the average velocity of a horse that covered 15 km in 2.5 hr due north?

Back

6.0 km/hr due north.

Front

How many neutrons does carbon-14 have?

Back

8 neutrons.

Front

Which group in the periodic table has 6 valence electrons?

Back

Group 16.

Front

Define a synthesis reaction.

Back

A synthesis reaction is a type of chemical reaction where two or more reactants combine to form a single product.

Front

What is the law of conservation of mass?

Back

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

Front

What is the formula for calculating average velocity?

Back

Average velocity = Total displacement / Total time.

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 speed and direction.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom, with no electric charge.