What is an example of an irreversible physical change?

melting an ice cube

making sawdust

crumpling paper

boiling water

Give A Real Life Example Of Chemical Energy

A quantity of N2 occupies a volume of 1.5L at 300K and 1.2atm. The gas expands to a volume of 3.1L as the result of a change in both temperature and pressure. Find the density of the gas at these new conditions.

Can the relative amounts of the components of a mixture vary? Can the relative amounts of the components of a Compound vary? Explain.

How do you find the oxidation number for a metal in a compound?

The respiratory system is responsible for the exchange of oxygen with what gas? nitrogen hydrogen water vapor carbon dioxide

Which formula id correctly paired with its name? A. MgSO↓ = magnesium chlorine B. FeO = iron (|||) oxide C. K↓2O = Phosphorus dioxide D. CuCI↓2 = copper (||) chloride

Which of the following correctly explains the role of enzymes in biochemical reactions? A) Enzymes provide energy in the form of ATP to lower the activation energy needed for the reaction.

How does being a landlord relate to chemistry in any way

Element m has an ellectronegativity of less than 1.2 and reacts with bromine to form the compound MBr2. Element M could be?

Which situation describes evidence of a chemical change? A. When food color is added to water, it changes color. B. A solid changes into liquid when heated. C. A solution feels warm after a cool solid is added to it. D.