Close

Chemistry

Which process can separate dissolved salt from water?

Which process can separate dissolved salt from water? distillation How is separating mixtures important to us? A mixture is actually made up of pure substances only. But they get mixed with each other in a mixture. Sometimes the individual pure substances are more important than the mixture. Thus, separation of substances is necessary to obtain […]

Read More

What reaction happens during the inflation of airbags?

What reaction happens during the inflation of airbags? The chemical at the heart of the air bag reaction is called sodium azide, or NaN3. CRASHES trip sensors in cars that send an electric signal to an ignitor. The heat generated causes sodium azide to decompose into sodium metal and nitrogen gas, which inflates the car’s […]

Read More

What substances are considered pure substances?

What substances are considered pure substances? Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). Crystals, in general, are pure substances. Tin, sulfur, and diamond are examples of pure substances that are chemical elements. How do you calculate the weight of material for […]

Read More

Which statements best describe shared characteristics?

Which statements best describe shared characteristics? The statement that describes shared characteristics best is “Shared characteristics can be new characteristics that have been modified from what was found in the common ancestor”. Shared characteristics are the derived characteristics that we get from our ancestors. Which best describes how shared characteristics can be used to identify […]

Read More

Where is the coldest place in the solar system?

Where is the coldest place in the solar system? WASHINGTON — Astronomers have found the coldest spot in our solar system and it may be a little close for comfort. It’s on our moon, right nearby. NASA’s new Lunar Reconnaissance Orbiter is making the first complete temperature map of the moon. It found that at […]

Read More

Do hurricanes form near the equator?

Do hurricanes form near the equator? Hurricanes are the most violent storms on Earth. They form near the equator over warm ocean waters. Actually, the term hurricane is used only for the large storms that form over the Atlantic Ocean or eastern Pacific Ocean. The generic, scientific term for these storms, wherever they occur, is […]

Read More