Periodic Table of Elements

What does the atomic number represent?

• The number of neutrons in an atom.

• The number of electrons in an atom.

• The number of protons in an atom.

• The total mass of an atom.

What is the chemical symbol for Lithium?

• Li

• L

• Lt

• LiO

What is the chemical symbol for Gold?

• Ag

• Au

• Pb

• Fe

What is the difference between an element and a compound?

• An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms.

• An element can be broken down into simpler substances, while a compound cannot.

• An element is a mixture of different atoms, while a compound is a single type of atom.

• An element is always a solid, while a compound can be a solid, liquid, or gas.

In an element box, the number at the top is the

• atomic number

• mass number

• electron configuration

• isotope number

What is the periodic table?

• A tabular arrangement of elements organized by increasing atomic number.

• A graphical representation of chemical reactions.

• A list of all known compounds and their properties.

• A collection of all isotopes of an element.

One way to tell how many elements a compound has is to...

• count the capital letters.

• count the number of vowels in the name.

• count the total number of letters.

• count the number of syllables.

What is the chemical symbol for Sodium?

• Na

• So

• S

• N

What is a compound?

• A substance formed when two or more elements are chemically bonded.

• A mixture of different substances that can be separated by physical means.

• A single element that cannot be broken down into simpler substances.

• A solution where one substance is dissolved in another.

What is the difference between Co and CO?

• CO is two elements and Co is only one element.

• Co is a compound while CO is an element.

• Co is a gas and CO is a liquid.

• CO is a single element and Co is a compound.