(Q).
Q: Compounds like sodium chloride form structures called what? Choices: - ions - microorganisms - hydrocarbons - crystals A:
(A).
crystals

(Q).
Q: Why do crystals have relatively sharp and well-defined melting points? Choices: - particular intermolecular forces - variable intermolecular forces - angular intermolecular forces - uniform intermolecular forces A:
(A).
uniform intermolecular forces

(Q).
Q: What carbohydrate from fruit juices is a gel-forming substance important in jelly making? Choices: - potassium - gelatin - cellulose - pectin A:
(A).
pectin