Is making salt water a chemical or physical change?

Which of these does not describe the process the Wright brothers used to create the first airplane? A. The Wright brothers figured out how to outfit the plane with wings that flapped, similar to birds' wings, B.

How many atoms of nitrogen on the reactant side

What happened approximately 20,000 years ago? A. the last ice age B. the last glacial maximum C. the last interglacial period D. a change in Earth's axial tilt

When 2 grams of powdered lead (IV) oxide was added to 100 cm3 of hydrogen peroxide, water and oxygen were produced. Lead (IV) oxide was not used up in the reaction.

How do water molecules in the solid phase compare with water molecules in the gaseous phase?

How much thermal energy (q) is required to heat 15.2 g of a metal (specific heat = 0.397 J/G) from 21.0 degrees C to 40.3 degree C

Two gas jars are connected to each other, but they are separated by a closed valve. One gas jar contains oxygen, and the other is empty. What will happen when the valve is opened?

4. Calculate the final concentration if water is added to 1.5 L of a 12 M NaOH solution to make 3.0 L of a diluted NaOH solution. Your answer

Why is it possible to safely drink a solution that contains a 50:50 mixture of equal concentrations of a strong acid and a strong base, either of which, if ingested separately, would be very caustic and damaging?

Explain why many compounds that contain one or more hydrogen atoms are not classified as arrhenius acids