When yeast is added to bread dough, it produces carbon dioxide. the pressure of the gas causes the dough to expand. explain how the rising of dough is an example of both a physical and a chemical change.

Graphite and iodine are non metal but they shine why secondry school

If a chemical reaction occurs in a direction that has a positive change in entropy thenGroup of answer choicesthe change in enthalpy must be negative. the reaction must be spontaneous. heat goes from the system into the surroundings.

What carries the useful energy of a lamp to its surroundings

Origin of hard water

6. State the number of significant digits in each of the following measurements. (a) 1.00 cm

All of the following can be recycled except clothing aluminum cans compact fluorescent bulbs plastic drink bottles

Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.0 L of water upon warming from 25 ∘C to 50 ∘C.

Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure.

When you light a fire place what energy transformation takes place

Correctly identify the generic formula for a synthesis reaction. a. AB + A+B b. A+B → AB c. CxHx + O2 → CO2 + H2O d. AB + C + AC + B e. AB + CD → AD + CB