What is a compound?

a) a combination of two or more substances that are not chemically combined

b) a combination of two or more elements that are combined in a certain ratio

The lowest possible concentration of free hydrogen ions is represented by a ph value of

If all of the forces acting on a car are balanced, then: A. the direction the car is moving will not change. B. the car will speed up. c. the velocity of the car will increase. D. the acceleration of the car will be negative.

Recognizing the Properties of Water Water has a "bent" geometry. Which explanation does not explain why? o Water's oxygen has unbonded electron pairs that repel each other. Water can form hydrogen bonds.

Describe the energy conversions that take place in a pendulum and explain how energy is conserved?

Write a balanced equation for the neutralization of HCl and Pu (OH) 4 (Pu will have a charge of + 4)

Calculate the concentration in % (m/m) of a solution containing 30.0g of mgcl2 dissolved in 270.0g of h20 A 11.75% B 10.0 % C 8.34 % D 7.41 % E 15.0 %

What type of an atom will form an ionic bond with flourine, atomic number 9?

Which structure is found in plant cell but not in an animal cell? A) cell wall B) cell membrane C) cytoplasm D) nucleus

When a conductor is passed through a magnetic field, a current is induced in the

What is a slogan for sulfur that rhymes