Using the Periodic Table

What is the chemical symbol for copper?

(a)  

C₆H₈O_{7 is the chemical formula for citric acid. What three elements make up this common compound?}

• calcium, hydrogen and oxygen

• carbon, helium and oxygen

• calcium, hydrogen and oxygen

• carbon, hydrogen and oxygen

Tags

NGSS.MS-PS1-1

Which of the following is a compound?

• H₂O - water

• C - carbon

• Li - Lithium

• O_{2 - oxygen}

Tags

NGSS.MS-PS1-1

Which of the following statements is NOT true of elements?

• Elements are pure substances.

• Elements are represented by formulas.

• Elements make up all mater.

• Elements are found on the periodic table.

Which statement about compounds is NOT true?

• Compounds are not pure substances.

• Compounds are made with 2 or more different elements.

• Compounds can be separated only by chemical reactions.

• Compounds are represented by formulas.

Tags

NGSS.MS-PS1-5

Ag is the chemical symbol for -

• argon

• silver

• gold

• mercury

The elements that are on the stair step on the periodic table are referred to as -

• metals

• nonmetals

• metalloids

• gases

Which statement is not true of BOTH elements and compounds?

• Pure substance

• Found naturally on Earth

• Cannot be broken down

• Essential for life

What is the chemical symbol for sodium?

• S

• So

• Na

• K

What is the chemical symbol of this element?

• 8

• O

• Oxygen

• 15.999