Exploring Rational Expressions in Physical Science

What is required for a solution to conduct electricity?

• Absence of ions

• Movement of electrons

• Movement of protons

• Presence of covalent bonds

What happens when solvent molecules encounter solute molecules?

• They cluster around and attract each other

• They form a solid

• They decompose

• They repel each other

Which factor does not increase the rate of solute dissolution?

• Decreasing the temperature

• Stirring the solution

• Increasing the surface area of the solute

• Using a solvent with higher polarity

What effect does increasing the temperature have on the solubility of a solute?

• Does not affect its solubility

• Increases its solubility

• Decreases its solubility

• Changes the color of the solution

Tags

NGSS.MS-PS1-4

What information does a solubility curve provide?

• The pH level of the solution

• The amount of solute that can dissolve at various temperatures

• The boiling point of the solution

• The viscosity of the solvent

What is the definition of an Arrhenius acid?

• A substance that produces hydroxide ions

• A substance that accepts a proton

• A substance that donates a proton

• A substance that produces hydrogen ions

What does the pH scale measure?

• The temperature stability of a solution

• The electrical conductivity of a solution

• The strength of an acid or base in terms of hydrogen ion concentration

• The concentration of hydroxide ions

What type of ions do bases produce in solution according to Arrhenius?

• Hydronium ions

• Helium ions

• Hydroxide ions

• Hydrogen ions

What is indicated by a pH value below 7?

• Neutral solution

• Basic solution

• Acidic solution

• Supersaturated solution

Which is not a property of acids?

• Tastes sour

• Feels slippery

• Can be corrosive

• Turns litmus paper red