Which of the following is a chemical change

Melting ice

Boiling water

A burning candle

Frost for info inside a freezer

A solution of 34% nacl is separated by a semipermeable membrane to a solution of 22% glucose. the membrane is only permeable to water. which direction will the net osmosis occur?

During a long drought, many deer become weak because a basic need is not being met. What requirements for life are the deer most likely lacking? enough space enough water adequate shelter ability to find mates

An open box of bandages is on the floor. Bandages wrappers are found nearby, what chemical treatment do you use.

Mixture with metallic properties

if i have 7.7 moles of a gas at a pressure of 0.09 ATM and a temperature of 329 K, what is the volume of the container that the gas is in?

Which atom has a change in oxidation number of - 3 in the following redox reaction K2Cr2O7 + H2O + S - - > KOH + Cr2O3 + SO2

Why does fluorine have a higher electronegativity than lithium?

What mineral is this? Irregularly shaped, white with nonmetallic luster, the hardness of 2.5, shows cubic cleavage and dissolves easily in water.

The passage of the USA Patriot Act of 2001 and the creation of the Department of Homeland Security reflect the determination of the United States government to (1) search for weapons of mass destruction in South Asia (2) increase the globalization

Is it possible for 2 different elements to have the same atomic number