2 pH- it's sour!
It's all Chemical
Matter Matters
Atom Splitting Headache
Why are you so Density?
100
What will happen to litmus paper in a neutral solution
Nothing- it stays the same color as it started
100
What is the definition of a chemical reaction
New substances are created/formed
100
True or False: the boiling point of water depends on the amount of water present
False
100
What does diatomic mean?
two atoms
100
A solid block of gold with a density of 8.54g was cut in half. What is the new density of that block of gold?
8.54g
200
Why do antacids (like Tums or Alka Seltzer) help to calm down heartburn?
It neutralizes the acid in the stomach
200
A copper penny has the following properties:
-shiny
-malleable
-oxidizes green
-density of 8.96g/cm3
Which is a chemical property of the copper penny?
Oxidizes green
200
What happens to water molecules as they warm up?
The molecules move faster (kinetic energy increase) and they spread apart
200
How many carbon atoms are in the following formula?
C6H12O6
6
200
Density=mass/volume
What is the density of an object that has a mass of 10g and a volume of 2cm3
5g/cm33
300
Blue litmus paper turns red, but red stays the same when exposed to a liquid. What type of liquid is it?
An acid
300
Elements on the periodic table are arranged according to the way they react.
This arrangement is called a ________
Family
300
What does malleable mean?
Able to be hammered
300
What does the Conservation of Mass state?
Matter cannot be created or destroyed
The mass of both reactants and products must be equal
300
A student added sand into a container of water. After a moment, she noticed all of the sand was at the bottom of the container. Why is this?
The sand is more dense than the water so it sinks.
400
Baking soda (a base) and vinegar (an acid) are added together creating a chemical reaction.
The end products are salt and water. What would the end products be considered?
Neutralizes (basic)
400
Lighting a match is an example of a
chemical change
400
As water freezes, the molecules of water
decrease in speed
become more rigid
400
What are the names of the products in the chemical equation shown below?
Sodium Chloride
Carbon Dioxide
Water (bonus points if you said dihydrogen monoxide)
400
List these items in order of density from largest (highest) density to smallest (lowest density)
Water, Oil, Rocks
1- rocks
2- water
3- oil
500
A substance has a pH of 2. What is this substance considered?
An acid
500
Sodium reacts with chlorine to create sodium chloride NaCl.
What is sodium chloride considered?
A compound
500
"Gases are easily compressed and are able to expand to fill their containers" is an example of what type of observation?
Properties of matter (gas)
500
Two elements are compared:
Nickel- atomic number 28
Sulfur- atomic number 16
Which has more electrons?
Nickel
500
Density= mass/volume
A substance is found to have a volume of 5cm3 and a mass of 15g
What is the density of the substance?
3g/cm3