Responses
Coffee, a substance made of water molecules and caffeine molecules.
Coffee, a substance made of water molecules and caffeine molecules.
Water, a substance made of a type of molecule that has two hydrogens and one oxygen.
Water, a substance made of a type of molecule that has two hydrogens and one oxygen.
Salt, a substance made of sodium and chloride ions that are attracted to each other.
Salt, a substance made of sodium and chloride ions that are attracted to each other.
Helium gas, a substance made of helium atoms that are not attracted to each other.
1 answer
The correct response indicating a mixture is:
Coffee, a substance made of water molecules and caffeine molecules.
Coffee is a mixture because it contains different substances (water and caffeine) that are not chemically bonded together. The other options represent pure substances or compounds: water is a compound, salt is a compound, and helium gas is a pure substance, consisting only of helium atoms.
