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100

How many atoms of each element are in the following compound: (NH4)2CO3?

N: 2 atoms

H: 8 atoms

C: 1 atom

C: 3 atoms

100

Which of the following types of mixtures is a heterogeneous mixture? 

1. suspension

2. solution

3. colloid

1. Suspension

100

Define water displacement

A known water level is measured, an object of irregular shape is place in the water, and the new water level is recorded.  The difference between the starting water level an the ending water level will tell you the volume of the object.

100
Name three characteristics of metals

Luster

ductile

conductive

reactive

malleable


100

Define a Polymer and hydrocarbon

A long compound composed of many monomers linked together


Hydrocarbon: molecule made of only hydrogen and carbon

200

What is the law that has to be followed during a chemical reaction?

Law of Conservation of Mass

200

When light shines through fog and you can see the light hit the particles that are throughout the air, what is this called?

Tyndall Effect

200

What is the mass of an object if its density is 45.0g/mL and its volume is 3.0mL?

135g

200

What is an alloy?

A substance that has properties of a metal but is made up of a mixture of elements.  Example: brass

200

Organic Chemistry is the study of what element?

Carbon

300

What elements naturally are found as diatomic elements?

Hydrogen

Nitrogen

Fluorine

Oxygen

Iodine 

Chlorine

Bromine 

300

When you dissolve sugar in water, which part of the solution is the solute?

Sugar: solute

Water: Solvent

300

Draw the triangle we use to help solve for density, mass and volume


300

Name an element that is a metalloid

Boron

300

If you are given 0.75 grams of Lithium, how many moles would you have?

0.75 grams of Lithium=0.1071 moles of Lithium

400

Define temperature.

The average kinetic energy of a substance

400

REVIEW:  What cannot be broken down into smaller means?

1. NaCl

2. AgNO3

3. O2

4. CO2

3.  O2

400
Why when ripping a piece of Aluminum the density never changes?

Density is the direct relationship between mass and volume, when one goes down so does the other.

400

The periodic table is mostly composed of __________

1. metals

2. nonmetals

3. metalloids

1. metals

400

Define Non-Newtonian substance

a substance that is not a solid or a liquid but somewhere in-between.  

500

When snow goes through sublimation and goes from a solid to a gas, what happens to the temperature?

The temperature remains the same.

500
What acronym do we use to remember chemical changes?

F.A.R.T.S.

Fizzing, aroma, replacement, temperature, substance

500

How many sig. figs. is:  5960.5000

8

500

What type of reaction occurs when an element is more reactive than part of the compound it is mixed with?

Solve:

Li + AgCl --> 

Single Replacement Reaction

Li + AgCl --> Ag + LiCl

500

Name one natural polymer and one synthetic

Natural:  silk, wool, wood, DNA, cellulose, proteins


Synthetic: plastic, polyester, micro-plastics, stitches, paint, sneaker rubber