Chemical Formulas-1

What does the term 'ionic bond' mean?

• A type of bond formed by sharing electrons between atoms.

• A type of bond formed through the electrostatic attraction between oppositely charged ions, typically between a metal and a non-metal.

• A bond that occurs only in organic compounds.

• A weak bond that forms between molecules due to temporary dipoles.

What is the chemical formula for water?

• H₂O

• CO₂

• NaCl

• C₆H₁₂O₆

What does the term 'molecule' refer to in chemistry?

• A molecule is a single atom that cannot be broken down further.

• A molecule refers to a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

• A molecule is a type of chemical reaction that occurs between two substances.

• A molecule is a large structure made up of many different compounds.

What is the chemical formula for ammonia?

• H₂O

• CO₂

• NH₃

• O₂

What does the subscript in a chemical formula indicate?

• The type of element present in the compound.

• The number of atoms of the element that are present in one molecule of the compound.

• The charge of the element in the compound.

• The state of matter of the compound.

What is a chemical formula?

• A method to calculate the mass of a substance.

• A way of expressing the composition of a substance using symbols for its constituent elements and numbers to indicate the quantity of each element.

• A technique for balancing chemical equations.

• A representation of the physical state of a substance.

What is the chemical formula for sodium chloride?

• NaCl

• KCl

• CaCl2

• Na2SO4

How many total atoms are in the formula C₆H₁₂O₆ (glucose)?

• 18 atoms

• 20 atoms

• 22 atoms

• 24 atoms

How do you determine the number of atoms in a chemical formula?

• By counting the number of elements in the formula.

• By adding the subscripts of each element present in the formula.

• By multiplying the number of elements by their atomic weights.

• By looking up the formula in a chemical database.

How many atoms are in a molecule of carbon dioxide (CO₂)?

• 1 atom

• 2 atoms

• 3 atoms

• 4 atoms