GS NOTES: PERIODIC TABLE

Multiple Choice

Which of the following statements is true about elements?

• Elements can be broken down into simpler substances.

• Elements are made of only one kind of atom.

• There are only 10 known elements.

• Elements are mixtures of different substances.

Open Ended

Why are elements considered the building blocks of matter?

Multiple Choice

Which of the following statements best describes an element?

• A substance made of only one kind of atom

• A mixture of different types of atoms

• A compound of two or more elements

• A substance that can be broken down into simpler substances

Multiple Choice

What is the purpose of the periodic table as shown in the images?

• To display all the known elements

• To show the structure of atoms

• To list all chemical reactions

• To explain the history of chemistry

Open Ended

Explain how the periodic table organizes elements and what information can be found in each element's box.

Multiple Select

Which of the following are true about chemical symbols?

• They are always one or two letters

• The first letter is always capitalized

• They are a shorthand for element names

• They are always written in lowercase

Open Ended

Describe the three main parts of an atom and where each is found.

Multiple Choice

Which subatomic particle does the atomic number represent in an atom?

• Neutron

• Electron

• Proton

• Quark

Open Ended

Explain the difference between atomic number and atomic mass, and describe what each tells you about an atom.

Multiple Choice

How do you calculate the number of neutrons in an atom using the periodic table?

• Add the atomic number and atomic mass

• Subtract the atomic number from the atomic mass

• Multiply the atomic number by the atomic mass

• Divide the atomic mass by the atomic number

Multiple Choice

Who is credited with developing the modern periodic table of elements?

• Marie Curie

• Dmitri Mendeleev

• Albert Einstein

• John Dalton

Multiple Select

Which of the following elements are part of the Noble Gas family?

• Helium

• Neon

• Argon

• Sodium

Multiple Choice

How many known elements are there currently, and how many occur naturally on Earth?

• 118 known elements, 92 occur naturally

• 92 known elements, 118 occur naturally

• 100 known elements, 100 occur naturally

• 150 known elements, 92 occur naturally

Open Ended

Summarize what you have learned about elements in today's lesson. Why do you think it is important to study elements?

Multiple Choice

Which of the following statements best explains why sodium, magnesium, and aluminum are in the same period on the periodic table?

• They all have the same number of protons.

• They all have the same number of energy levels.

• They all have similar chemical properties.

• They all belong to the same group.