A base is a chemical that has hydroxide (OH)–, as its negative part, such as NaOH (Na+ and OH–) Some chemicals, such as baking soda (NaHCO3), form a base when mixed with water. A base indicator is a chemical that changes color when added to a base. If the indicator is dry, such as litmus […]
Acid/Base Indicators
Indicators Acid Indicators are materials that change color in an acid solution. Base Indicators are materials that change color in a base solution. Acid/Base Indicators are materials that have one color when mixed with an acid and another color when mixed with a base. Red Cabbage Juice is an acid/base Indicator. The juice has a […]
Earthworm: Digestive System
Question: Do earthworms really eat dirt? Answer: Yes, earthworms eat dirt. But most of the dirt eaten by earthworms moves through their body and is deposited as waste. The waste of earthworms is called casts. There is much more to the earthworm’s digestive system than just eating and pooping dirt. An earthworm’s digestive system consists […]