Exploring the Periodic Table Concepts

What are noble gases?

• Elements that are highly reactive and form compounds easily.

• Elements that are inert and do not react easily with other elements.

• Elements that are found in the middle of the periodic table.

• Elements that are always in a liquid state at room temperature.

What is the periodic table?

• A chart that organizes elements by their atomic number and properties.

• A list of all known compounds.

• A table that shows the phases of the moon.

• A chart that displays the weather patterns.

What is an element?

• A substance made of two or more different atoms bonded together.

• A pure substance consisting of only one type of atom.

• A mixture of different substances.

• A type of chemical reaction.

What does the symbol of an element represent?

• The number of protons in the element.

• The name of the element in a shortened form.

• The atomic mass of the element.

• The number of electrons in the element.

What is the atomic number of an element?

• The total number of protons and neutrons in the nucleus.

• The number of protons in the nucleus of an atom.

• The number of electrons in the outer shell.

• The number of neutrons in the nucleus.

What is atomic mass?

• The mass of an atom expressed in atomic mass units (amu).

• The number of protons in an atom.

• The number of electrons in an atom.

• The weight of an atom in grams.

What are metals?

• Elements that are poor conductors of heat and electricity.

• Elements that are good conductors of heat and electricity.

• Elements that are gases at room temperature.

• Elements that are always radioactive.

What are nonmetals?

• Elements that are shiny and malleable.

• Elements that are good conductors of electricity.

• Elements that are poor conductors of heat and electricity.

• Elements that are always in a solid state.

What are metalloids?

• Elements that have properties of both metals and nonmetals.

• Elements that are only found in compounds.

• Elements that are always gases.

• Elements that are highly reactive with water.

What is a compound?

• A mixture of two or more substances that are not chemically bonded.

• A substance made of two or more different elements that are chemically bonded.

• A single element in its pure form.

• A solution of a solid dissolved in a liquid.

Tags

NGSS.MS-PS1-1