Which of the following is a chemical reaction?

A. Breaking a glass pane

B. Freezing water

C. Digestion of food

D. Cutting down a tree

E. Evaporation of rubbing alcohol

An aqueous solution contains 300 parts per million of KOH. Determine the number of grams of KOH present in 1000 grams of this soulution

If a solution has a pH of 10, is the solution acidic or basic? Explain why

Describe the electrolysis of molten lithium chloride to produce lithium and chlorine gas.

How is chemistry used in body sytems

Proper ion concentrations play an important role in cardiac function. which of the following would be a direct consequence of a deficiency in calcium ions?

Which statement correctly describes the interaction between magnetic poles? North and south poles attract each other. North and south poles repel each other. Two north poles will attract each other. Two south poles will attract each other.

You are measuring the mass of various shapes objecys and identifying their shaped ypu then record the qualitative and quanatitave data in a table is qualitataive wnd which is quatitaive

A positively charged wire is attracted to a negatively charged piece of metal. What force causes this?

Two identical atoms from Area B bond together. What type of bond will they most likely form A. Electrostatic B. Metallic C. Ionic D. Covalent

Which would be the best way to represent the concentration of a 1.75 M K2CrO4 solution? 1.75% K2CrO4 [K2CrO4] (K2CrO4) K2CrO4, [M] = 1.75