Giovanni created this chart to study for an exam. which best describes how to correct the error in the chart? remove “plastics” from the uses for sodium hydroxide. swap the uses for iron oxide and calcium carbonate. change the use for calcium chloride to “used in preservatives.” add “de-ice roads” to uses for calcium carbonate.

Calcium carbonate when mixed with water result in the formation of Calcium hydroxide which is used as an antacid. The chloride ion also helps in the whitening of teeth thus finding its use as an ingredient in toothpaste.

Iron oxide is dark pigment which is naturally used in makeup.

the answer is swap the uses for iron oxide and calcium carbonate. on edg

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

that's what i got you can count the number of atoms