H2 and Fe represent

What is the reason why bubbling occurs when vinegar is mixed with baking soda? A) a precipitate B) a gas is produced C) a color change occurs

A gas container in a thick walled balloon. when the pressure changes from __kPa to 114kpa, the volume changes from 0.654L to 1.32 L and the temperature changes from 596 K to 715 k

Mendeleev's periodic table of elements was organized by a. atomic number b. number of electrons c. number of protons d. mass

Is a pencil falling to the floor anon contact force, a force, or a contact force

What are groups 1, 2, and 3 examples of on a periodic table of elements? A) Metals B) Nonmetals C) Metalloids D) Noble gass

Which types of orbitals are found in the principal energy level n = 4? A. S, d B. S, p, d, f C. S, p D. S, p, f E. S, d, f

Transport means to move something from one place to another. True False

What are two reasons that ocean water sinks in the Arctic Ocean? A. The surface water is warmer and less salty than normal. B. The surface water is warmer and more salty than normal. C. The surface water is colder and less salty than normal. D.

Which statement best describes the conductivity of weak electrolytes, such as weak acids and bases? A) Weak electrolytes do not dissolve in water and can not conduct electricity.

Two speakers are placed side by side and are described as having constructive interference. How do you know when constructive interference of sound waves has occurred?