Is sodium hydroxide dissolves in water a physical change

How are evidence and conclusions related

If a sample of hot water and cold water are mixed, energy will flow from the hot water to the cold water. The heat transfer will stop when the mixture reaches a temperature between the two original temperatures. True Or False

If 6.42 g of water is produced, how many grams of oxygen gas reacted?

What is the ionic bonding of NaCl

12570000000 in scientific notation

Which is a cause of desertification? A. farming B. creating reservoirs C. overgrazing D. driving motor vehicles

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a

Is chicken noodle soup an element, a compound, a homogeneous mixture, or a heterogeneous mixture?

How is the amount of sunlight affect the makeup of an ecosystem

How many moles are in 65 g of carbon dioxide (CO2) ?