Question: Answer the following question given this paragraph: Hydrocarbons vary greatly in size, which influences properties such as melting and boiling points. At room temperature, hydrocarbons may be gases, liquids, or solids. They are generally nonpolar and do not dissolve in water. Q: What type of carbons may be gases, liquids, or solids at room temperature? Choices: - diamonds - amorphous - graphites - hydrocarbons A:
Answer: hydrocarbons

Question: Answer the following question given this paragraph: The strength of acids and bases is determined by the concentration of ions they produce when dissolved in water. The concentration of hydrogen ions in a solution is called acidity. It is measured by pH. A neutral substance has a pH of 7. An acid has a pH lower than 7, and a base has a pH greater than 7. Q: The concentration of hydrogen ions in a solution is called? Choices: - alkalinity - alcohol - moisture - acidity A:
Answer: acidity

Question: Answer the following question given this paragraph: Q: What can damage animal tissues? Choices: - wind erosion - nervous stress - acid and water exposure - extreme pressure or temperature A:
Answer:
extreme pressure or temperature