应用化学专业英语课后练习题含答案
Chapter 1
Multiple choice
1.The concept of “moles” is central to chemical reactions. A mole of a compound is defined as:
a.The molecular weight of the substance in grams.
b.The molecular weight of the substance in milligrams.
c.The molecular weight of the substance in kilograms.
d.The molecular weight of the substance in moles.
Answer: a
2.A substance that donates protons in a chemical reaction is called a/an:
e.Acid.
f.Base.
reaction in the shaftg.Salt.
h.Neutralizer.
Answer: a
3.Which of the following elements is not considered a metal?
i.Gold.
j.Silver.
k.Copper.
l.Carbon.
Answer: d
Short answer
2.What are the three states of matter?
Answer: The three states of matter are solid, liquid, and gas.
3.What is the difference between an element and a compound?
Answer: An element is a pure substance made up of only one type of atom, while a compound is a pure substance made up of two or more types of atoms.

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。