Elements, Compounds , and Mixtures
Properties of Water
Properties of Acids and Bases
Conservation of Mass in Chemical Reactions
Random
100
A substance that contains an even distribution of molecules
Homogenous Mixture
100
Which property of water is shown in the image?
Cohesion
100
Acids are what color on the pH scale?
Red
100
Why do chemical equations need to be balanced?
So that they follow the law of conservation of mass
100
How many STAAR tests will you be taking this year?
4
200
This type of matter is represented by one-colored spheres that can either be connected or separated.
Element
200
What property of water allows drops of water to stay on the web?
Adhesion
200
Define pH.
How acidic or basic water is.
200
Barium chloride reacts with sodium sulphate and forms Barium sulphate and sodium chloride. Which of the following statement is correct according to the law of conservation of mass?
a.) The total mass of reactants, barium chloride, and sodium sulphate taken is greater than the total mass of the products, barium sulphate, and sodium chloride.
b.) The total mass of reactants, barium chloride, and sodium sulphate taken is less than the total mass of the products, barium sulphate, and sodium chloride.
c.) The total mass of the reactants is equal to the total mass of the products.
d.) None of the above
The total mass of the reactants is equal to the total mass of the products.
200
What is our school Mascot?
Bulldog
300
Any substance that consists of element and compounds.
Mixture
300
When water sticks to other water molecules?
Cohesion
300
For substances that are neutral, what effect is shown on litmus paper when conducting a pH test?
(red/blue strips)
Litmus paper stays the same color
300
If this reactions follows the law of conservation of mass, how many grams of zinc should have been produced?
104g
300
What is our 8th grade AP's name?
Yesenia Rodriguez
400
Describe the following:
1. 2. 3.
1.Element
2.Compound
3.Mixture
400
The forces of _________ allow ________ to form on the top layer of a liquid.
Cohesion and Surface tension
400
What range of pH values are associated with a substance that is alkaline/basic?
7-14
400
f the law of conservation of mass holds true, how much sodium chloride will react with 34.0 g of silver nitrate to produce 17 g of sodium nitrate and 28.70 g of silver chloride?
11.70 g
400
What is the address of our school?
1901 Sunrise Rd.
500
What is the difference between a compound and a mixture?
Compounds are chemically connected
500
Describe the three labs conducted and how what property of water they represented
paper towel transport - adhesion & cohesion
Drops on a penny- Adhesion & cohesion
Floating paperclip- Cohesion & surface tension
500
List the following substances in order from least acidic to most acidic.
Battery acid, Blood,Bleach, Tomato, Drain Cleaner
Drain cleaner, bleach, blood, tomato juice, battery acid
500
A principle that states that matter cannot be created or destroyed, rather transferred or transformed.
Law of Conservation of Mass
500
Who is the school named after?
Robert P. Hernandez