Periodic Table Basics and Compounds

Which of the following is a compound?

• Oxygen

• Water

• Gold

• Helium

What is the main difference between an element and a compound?

• Elements are made of two or more types of atoms, compounds are not.

• Compounds are made of two or more types of atoms, elements are not.

• Elements can be broken down into simpler substances, compounds cannot.

• Compounds are found on the periodic table, elements are not.

Which of the following is true about the periodic table?

• It organizes elements by increasing atomic mass.

• It organizes elements by increasing atomic number.

• It organizes elements by decreasing atomic number.

• It organizes elements by alphabetical order.

What information does the atomic number of an element provide?

• The number of protons in an atom

• The number of neutrons in an atom

• The number of electrons in an atom

• The atomic mass of an atom

Which of the following is a property of metals?

• Brittle

• Poor conductor of electricity

• Malleable

• Dull

Which property is common to nonmetals?

• High density

• Good conductor of heat

• Ductile

• Poor conductor of electricity

Which of the following elements is a metalloid?

• Silicon

• Oxygen

• Iron

• Gold

What characteristic is typical of metalloids?

• They are all gases at room temperature.

• They have properties of both metals and nonmetals.

• They are excellent conductors of electricity.

• They are very reactive with water.

Which of the following is a use of rare earth metals?

• Making glass

• Producing fertilizers

• Manufacturing electronics

• Building construction

Tags

NGSS.HS-ESS3-2

Why are rare earth metals important in technology?

• They are used to make paper.

• They are used in the production of strong magnets.

• They are used to produce food.

• They are used in the construction of roads.