Exploring the Periodic Table and Chemical Elements

What is the primary purpose of the periodic table?

• To display the history of chemistry

• To organize chemical reactions

• To compare characteristics, patterns, and relationships between elements

• To list all known compounds

Who created the first extensive list of elements in 1778?

• John Newlands

• William Ramsay

• Dmitri Mendeleev

• Antoine Lavoisier

What does the periodic law state?

• Physical and chemical properties of elements recur periodically when arranged by increasing atomic number

• Elements are grouped by their color

• Elements are arranged alphabetically

• Elements are arranged by their discovery date

What is matter?

• Anything that takes up space and has weight

• Only solid objects

• Anything that can be seen

• Only liquids and gases

What are the three kinds of smaller particles that make up atoms?

• Protons, neutrons, and electrons

• Protons, neutrons, and quarks

• Electrons, quarks, and photons

• Neutrons, photons, and electrons

What is a compound?

• A substance containing only one type of atom

• A mixture of different elements

• A substance containing more than one type of atom

• A single element in its pure form

Tags

NGSS.MS-PS1-1

Which of the following is an example of a physical property?

• Density

• Radioactivity

• Flammability

• Toxicity

Tags

NGSS.MS-PS1-4

Which group contains the alkali metals?

• Group 18

• Group 2

• Group 1

• Group 17

What are the elements in Group 18 known as?

• Noble gases

• Halogens

• Alkaline earth metals

• Transition metals

Which elements are classified as metalloids?

• Boron, silicon, germanium, arsenic, antimony, tellurium, and polonium

• Hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur, and selenium

• Fluorine, chlorine, bromine, iodine, and astatine

• Helium, neon, argon, krypton, xenon, and radon