When a chemical reaction takes in energy it might feel

A. Hot

B. Cold

C. Boiling

D. Electric

C+ZnO=Co+ZnO Give the oxidized agent Reducing agent Substance oxidized Substance reduced

Compare and contrast homogeneous and heterogeneous mixtures using key terminology, and provide at least three examples of each. For example, explain what the mixture is comprised of and what makes it homogeneous or heterogeneous.

In a five-fold serial dilution of a 20 pg/ml solution, all tube dilutions are 1/5. What is the substance concentration in the third tube of this series?

6co2 (g) + h2O (/) C6H12o6 + 6O2 (g) what is the statement and why is an endothermic reaction?

Ionic bonds form between two negatively charged particles true or false

Calculate the mass percent composition of sulfur in Al2 (SO4) 3. Calculate the mass percent composition of sulfur in Al2 (SO4) 3. 28.12 % 42.73 % 35.97 % 9.372 % 21.38 %

What is a striking a match an example of

In any ordinary chemical reaction, matter is neither created nor destroyed; it is simply changed from one chemical substance to another. This principle is called the Law of:

Which of the following shows no reaction with acid? A. copper B. copper carbonate C. magnesium carbonate D. magnesium

Describe what happens to salt when it dissolves in water.