The moon never changes. But the moon looks different throughout the month because of the way the starlight hits it.

a. true

b. false

Identifying and Balancing Chemical Equations Name: Balance these equations (even if the value is one put it in the blank): the type of reaction. (Synthesis, Decomposition, Single Replacement, Double! Combustion) Type 1. _HgO + _Hg + _02

Why is it less effective to wash an insoluble precipitate with 15 ml of water once, than it is to wash the precipitate with 3 ml of water 5 times

The si unit for distance is? The si unit for speed or velocity is? The si unit for acceleration is?

What is a ion in a solution?

The first law of thermodynamics states that E=Q-W. How is this also a statement of principle of conservation of energy? A. A change in internal energy causes work to be done and heat to flow into the system. B.

Which formula can represent hydrogen ions in an aqueous solution? OH - (aq) Hg2^2 + (aq) H30 + (aq) NH + (aq)

A gas has a temperature of 14 degrees C and volume of 4.5 liters. If the temperature is raised to 29 degrees C and the pressure is not changed, what is the new volume of the gas? .

How much heat is needed to raise the temperature of 50.0 g of water from 4.5 ⁰C to 83.0 ⁰C?

How does temperature affect the rate of a reaction? A. Increasing the temperature decreases the potential energy of the reactants. B. Increasing the temperature gives the molecules more kigetic energy C.

Who thought everything was made from fire, earth, air, and water? A. Ancient Egyptians B. Democritus C. Socrates D. Aristotle SUBN