Will give everything positive if answered right

Which of the following are physical properties of matter?

A.

size, shape, and color

B.

phase of matter and temperature

C.

density, solubility, and hardness

D.

all of these

Which of the 3 variables that apply to equal amounts of gases are directly proportional?

How can you tell the difference between a mixture and a pure substance

Describe how electron movement is related to the bonding in methane, CH4. A) Electrostatic sharing of electrons allows ionic bonds to form. B) The atomic orbitals overlap and share electrons to form covalent bonds.

How often does the water cycle occur on earth? A) all the time B) once per month C) once per week D) Once per year

if the pressure in a balloon is 20 atm at 20 K, what will be the pressure when the temperature is raised to 30K?

The ksp of cobalt (ii) carbonate, coco3, is 1.0 * 10-10. calculate the solubility of this compound in g/l.

If crown b is more dense than crown a then which is pure gold

In an ecosystem, a population can be defined as A. all the individuals of a species that exist together at a given place and time. B. all individuals of a species born in a specified month in every region of the world. C.

How many grams of NH3 are needed to provide the same number of molecules as in 0.55 grams of SF6?

Round 129.752416 to the requested number of significant figure a. 3 significant figures c. 6 significant figures_22 b. 4 significant figures d. 7 significant figures