Lesson 1 & 2 Quiz

Which describes how elements are arranged in the periodic table?

• by chemical symbol

• by decreasing atomic number

• by alphabetical order of name

• by increasing atomic mass

The periodic table has a lot of information in the form of letters and numbers. The information is organized into boxes, which are placed in rows and stacked in columns. Which of the following does each box represent?

• a group

• a period

• an element

• a compound

What is true about the position of all metals in the periodic table?

• They are in the first group.

• They are in the bottom period.

• They are in the rightmost column.

• They are to the left of the zigzag line.

The prefix semi- means “partly.” Based on your knowledge of the properties of elements, which kind of element is most likely used to make semiconductors?

• liquids

• metalloids

• nonmetals

• metals

In the periodic table below, find the element with the average atomic mass of 87.62. Which of the following is the chemical symbol for this element?

• Sr

• Rb

• Sc

• Y

An atom’s mass number is 210 and its atomic number is 85. How many neutrons does the atom have?

• 85

• 125

• 210

• 295

Think about a wooden chair and a balloon. What do these two objects always have in common?

• Both are made of atoms.

• Both have the same mass number

• Both are made of the same kind of atom.

• Both are made of the same number of atoms.

Which of the following scientists added negatively-charged electrons to the model of the atom?

• Niels Bohr

• John Dalton

• Ernest Rutherford

• J. J. Thomson

Calcium is an element. What is the smallest particle of calcium that has all the chemical properties of calcium?

• a molecule that contains calcium

• an electron from a calcium atom

• a proton from a calcium atom

• an atom of calcium

Columns on the periodic table are known as

• Stackers

• Periods

• Pillars

• Groups