I WONDER - What Are The Signs That A Chemical Reaction Is Occurring?

Chemical reactions often provide clues such as color changes, bubble formation, or temperature shifts. An example is mixing food coloring with vinegar and baking soda, which produces bubbles and may change color. Some reactions, like those involving sulfur, can emit distinct smells, such as rotten eggs. These indicators help identify when a chemical reaction is occurring.

What are some indicators that a chemical reaction is occurring?

• A change in color, bubbles forming, or a temperature change

• A change in shape, sound, or light

• A change in size, weight, or density

• A change in taste, texture, or volume

Which of the following is NOT a typical clue of a chemical reaction?

• Change in color

• Formation of bubbles

• Increase in temperature

• Increase in size

What happens when you mix food coloring with vinegar and baking soda?

• It produces a sweet smell

• It creates bubbles and may change color

• It turns into a solid

• It evaporates quickly

What is a common result of mixing vinegar and baking soda?

• Increase in weight

• Production of bubbles

• Formation of a solid

• Emission of light

Which of the following is a sign of a chemical reaction involving sulfur?

• A bright flash of light

• The odor of rotten eggs

• A metallic taste

• A sweet fragrance