Compounds and Formula

How many different elements are in this chemical formula: C₂H₂ClK₃

• 2

• 4

• 6

• 8

Tags

NGSS.MS-PS1-1

Which of the following atomic symbols is written correctly?

• ee

• hE

• C

• CL

Which of the following atomic symbols for bromine is written correctly?

• bR

• BR

• Br

• br

Which of the following chemical formulas represents a compound?

• C₃

• O₂

• H₂

• CH₃CHO

Can be found on the periodic table

• Element

• Molecule

• Compound

• Mixture

What is gold?

• Element

• Compound

• Mixture

Which best describes a compound?

• found on the periodic table

• made from two or more elements

• only 100 in the world

• a pure substance

Compounds are represented by a...

• Capital Letter

• Chlorine

• Chemical formula

• Chemical symbol

How many different elements are represented in the compound?

Fe₃O₄

• 1

• 2

• 3

• 4

Provided is a list of four different substances. How many of these substances are elements?

NaOH / H₂O / N₂ / H₂

• 1

• 2

• 3

• 4