Name: ELEMENTS COMPOUNDS MIXTURES WORKSHEET
I. Fill in the Blanks:
1. A
can be either an element or compound.
2. A liquid in which the particles settle out is a
mixture called a
3. A substance which contains only one type of atom is an
4. Define matter
mixture also
5. When two or more substances are mixed evenly this is a
called
6. What are two differences between a compound and a mixture?
7. A
mixture is one in which particles or layers can be seen.
8. What are two things that element and compounds have in common?
9. A
separated by physical means, and a
can be separated by chemical means, a
can be
can't be separated by physical or chemical means
10. A
particles do not settle.
is a heterogeneous mixture that has particles farge enough to scatter light, but the

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =

Building glycogen from glucose molecules is an example of

These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.