Physical Science - Semester 1 Exam Review

Front

In an experiment, which factor is manipulated to observe its effect on the dependent variable? Options: constant, dependent variable, control, independent variable

Back

independent variable

Front

What does a chemical formula represent?

Back

The structure of a compound

Front

What is the name of the compound with the formula NaCl?

Back

sodium chloride

Front

What is the charge of phosphate in K3PO4?

Back

3-

Front

What is the correct name for K2SO4?

Back

potassium sulfate

Front

What is the correct formula for magnesium oxide?

Back

MgO

Front

What type of chemical equation has the same number of atoms of each element on each side of the equation?

Back

balanced

Front

Each substance on the left side of the arrow in a chemical equation is a ____.

Back

reactant

Front

Which of the following is a balanced chemical equation? AgNO3 + NaCl → 4AgCl + 2NaNO3, 2AgNO3 + 2NaCl → 3AgCl + 2NaNO3, AgNO3 + NaCl → AgCl + NaNO3, AgNO3 + 2NaCl → AgCl + 3NaNO3

Back

AgNO3 + NaCl → AgCl + NaNO3

Front

The energy required to break the original bonds is less than the energy released when new bonds form in a(n) ____ reaction.

Back

exergonic