What is the ideal temperature of water if it is pollution free? Pure water will remain neutral at 0°C (pH is 7.47), 25°C. (pH is 7.00) or 100°C. What happens to water molecules as they are heated? When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the […]
What is the connotative of noisy?
WHAT IS elements and compounds with example?
WHAT IS elements and compounds with example? Elements, mixtures and compounds Common examples include carbon, sulfur, oxygen, iron, copper, aluminium. Elements are represented by symbols. Compounds are substances made from atoms of different elements joined by chemical bonds. They can only be separated by a chemical reaction. What are the types of compounds? Types of […]
How do you write a good thank you letter?
How do you write a good thank you letter? No matter what form you use to send your thank-you note, there are certain components you should always include. Address the person appropriately. Say thank you. Give (some) specifics. Say thank you again. Sign off. Send it as soon as possible. Be positive but sincere. Personalize […]
Why burning is a chemical change?
Why burning is a chemical change? A chemical change occurs whenever matter changes into an entirely different substance with different chemical properties. Burning is an example of a chemical change. Because chemical changes result in different substances, they often cannot be undone. Where does the wax go when you burn a candle? When you light […]
What is the sum of the forces?
Where is bad ozone found?
Where is bad ozone found? troposphere Can ozone kill fungus? An ozone level of 0.4 ppm for 4 minutes has been shown to kill any bacteria, virus, mold and fungus. 1 parts per million is equivalent to: 8.345 pounds per million gallons (US). Mold and mildew are easily controlled by Ozone present in air and […]
Why is electrical resistance important?
Why is electrical resistance important? Resistance is another important property that can be measured in electrical systems. The same is true with electricity. Materials with low resistance let electricity flow easily. Materials with higher resistance require more voltage (EMF) to make the electricity flow. What is electrical resistance unit? Electric resistance has the dimension length […]