Understanding pH, Mass-Energy, and Variables

Front

A solution with pH of 7 is considered neutral. What does this mean?

Back

The solution has the same number of hydrogen ions and hydroxide.

Front

Mass is the same thing that energy

Back

False

Front

The variable that is being measured is...

Back

dependent variable

Front

In beaker 1 (no heat added) Jamie observed crystals forming and growing on the string and the sugar water slowly evaporates. How could you describe the changes?

Back

The sugar and the water are going through a physical change.

Front

If you run an experiment what is the best way to present your findings? Options: Highlight only unexpected results, ignoring how they relate to the hypothesis. Have the results support the hypothesis. Organize the data to show how the results support the hypothesis clearly and accurately. Highlight only unexpected results, ignoring how they relate to the hypothesis.

Back

Have the results support the hypothesis.

Front

Sodium (Na) reacts with chlorine (Cl) to form table salt. What would happen if potassium (K) is mixed with chlorine (Cl)?

Back

Mixing K with Cl would also make a salt since they are in the same group.

Front

The law of conservation of mass states

Back

mass cannot be created or destroyed but it can be changed

Front

The substance that does the dissolving

Back

Solvent

Front

Apple juice has lower pH than black coffee. Which BEST explains the relationship?

Back

Apple juice has MORE hydrogen ions than black coffee.

Front

Which substance solubility is not affected? Options: Proteins, Sodium chloride, Sugar, Water

Back

Sodium chloride