Q: What is added to alcohol and used as an antiseptic? Choices: - chloride - arsenic - chlorine - iodine A:
iodine

(Question)
Q: The direct conversion of a solid to a gas, without an intervening liquid phase, is called what? Choices: - amplification - isolation - insertion - sublimation A:
(Answer)
sublimation

Ques: Q: The periodic table is an arrangement of the elements in order of increasing what? Choices: - gravity numbers - metallic numbers - negative numbers - atomic numbers A:
Ans: atomic numbers

(Q).
Q: What trophic level are secondary consumers (which eat primary consumers) considered to be? Choices: - trophic level 5 - trophic level 4 - trophic level 2 - trophic level 3 A:
(A).
trophic level 3

Ques:Q: What involves the reaction of a hydrocarbon with oxygen gas to produce water and carbon dioxide? Choices: - hydrogen reactions - chemical reactions - material reactions - combustion reactions A:

Ans:combustion reactions

Question: Q: Living in a large colony requires good communication. ants communicate with chemicals called what? Choices: - alkalides - hormones - peptides - pheromones A:
Answer:
pheromones