Physical Science EOC Review

Front

What is pH?

Back

pH is a scale used to measure the acidity or alkalinity of a solution, ranging from 0 (very acidic) to 14 (very alkaline), with 7 being neutral.

Front

Which solution is most acidic: cranapple juice (pH 5.0), salad dressing (pH 4.5), pickle juice (pH 3.0), or lye water (pH 10.0)?

Back

Pickle juice, pH = 3.0 is the most acidic.

Front

What is the symbol for the element copper?

Back

The symbol for copper is Cu.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.

Front

What type of chemical bond is formed in CaCl2 (calcium chloride)?

Back

An ionic bond is formed in CaCl2.

Front

What is the name of the compound formed from the reaction 2 Na + Cl2 --> 2 NaCl?

Back

The compound formed is sodium chloride.

Front

What is an ionic bond?

Back

An ionic bond is a type of chemical bond that occurs when electrons are transferred from one atom to another, resulting in the formation of charged ions.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a process that leads to the transformation of one substance into another, involving the breaking and forming of chemical bonds.

Front

What is the pH of a neutral solution?

Back

The pH of a neutral solution is 7.