How do we know that caramelizing sugar is a chemical change?

a.) it involves dissolving sugar in water.

b.) it changes the state of sugar from a solid to a liquid.

c.) it separates sugar from a sugar solution.

d,) it changes the sugar's color.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

One of the few xenon compounds that form is cesium xenon heptafluoride (csxef7). how many moles of csxef7 can be produced from the reaction of 13.0 mol cesium fluoride with 12.5 mol xenon hexafluoride? csf(s) + xef6(s) csxef7(s)