How do you know a chemical change has occurred?

Water has a high heat capacity. This property allows which of the following? Select one: a. Solid ice to float on liquid water b. Water to store large amounts of heat energy c. Liquid water to remain in higher temperatures d.

Which sample is a homogeneous mixture? A) NaCI (s) B) NaCl (aq) C) NaCl (g) D) NaCl (ℓ)

An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. how many electrons does boron have? 11 15 5 2

What is the between heat of neutralization and enthalpy of neutralization

Which of the following represent kinetic energy? A) water behind a dam B) a roller coaster at the top of a hill C) gasoline D.) Riding a bicycle E.) An apple falling from a tree F.) Wind

Which is the balanced chemical equation for the reaction of nitrogen (n2) with oxygen (o2) to form no?

What cells are chicken eggs made from

What is the study of matter called? O A. Chemistry O B. Philosophy O O C. Biology D. Physics

Molality is a unit of concentration that measures the moles of solute per liter of solution. liter of solvent. kilogram of solution. kilogram of solvent.

What evidence do you have that the slope of the natural logarithm plot will be the same for all ions of the same charge, and not just for the ions you investigated?