Multiple Choice
The most modern definition of element is
A) a substance that cannot be further separated by chemical methods.
B) the simplest form of matter.
C) a substance in which all the atoms have the same number of protons.
D) a substance that contains no neutrons.
Correct Answer:
Verified
Correct Answer:
Verified
Q35: Take a cup of water, add sugar,
Q36: The elements that hardly ever react with
Q37: The horizontal rows of elements in the
Q38: The symbol for tin is<br>A) Sn.<br>B) Ti.<br>C)
Q39: The symbol for potassium is<br>A) Pm.<br>B) Po.<br>C)
Q41: About 99% by mass of Earth's atmosphere
Q42: Give the formula, including the ionic charge,
Q43: Which of the following is not matter?<br>A)
Q44: The molecular formula of "buckyball" is _.
Q45: The symbol for Erbium is<br>A) Er.<br>B) Yb.<br>C)