Method to the Madness
Atom Anatomy
Examining Elements
Mass and Density
Volume and Temperature
100
What is a hypothesis?
An educated guess or prediction for an experiment.
100
What part of the atom is located in predictable orbits and probable location around the center?
The Electrons
100
What is the smallest distinguishable unit of all matter?
An atom.
100
What would be more dense?
100g Solid Iron Block
100g of Melted Iron Liquid
100g of Vaporized Iron Gas
100g Solid Iron Block
100g of Melted Iron Liquid
100g of Vaporized Iron Gas
100
What has more volume?
a. 10 mL Tissue Box with 10g of tissues
b. 1000 mL Pool filled with 1000 g of pebbles
c. 1250 mL Empty Fish Tank
d. 1000 g Water Bottle filled with 10 mL of orange juice pulp
a. 10 mL Tissue Box with 10g of tissues
b. 1000 mL Pool filled with 1000 g of pebbles
c. 1250 mL Empty Fish Tank
d. 1000 g Water Bottle filled with 10 mL of orange juice pulp
200
What part of the scientific method involves interpreting the results, abnormalities, improvements, and future changes to an experiment?.
The Conclusion
200
This is the center area that contains the positively charged and neutral charge particles.
The Nucleus
200
If two atoms that have different identities from each other. For example, Sodium (Na) and Chlorine (Cl), are bonded together, is this considered an atom, element, or a molecule?
Sodium Chloride (NaCl) is a molecule.
Sodium is a different type of atom from Chlorine.
There are multiple atoms bonded together.
200
What tool could be used to measure the mass of an object?
A ruler
A thermometer
A triple beam balance
A scale
A ruler
A thermometer
A triple beam balance
A scale
200
Which of these tools can be used to measure the volume of an object? (You can pick more than one)
Graduated cylinders
Ruler or Meter Stick
Triple Beam Balance
Oscillometer
Which of these tools can be used to measure the volume of an object? (You can pick more than one)
Graduated cylinders
Ruler or Meter Stick
Triple Beam Balance
Oscillometer
300
Which of these is an independent variable?
You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives pure water. After a two- week period, the height is measured.
The concentration of salt in the water given to the trees.
Reason: It is the variable that we purposely change.
300
What particle does not contribute to the charge of an atom, but does influence the nuclear stability?
The Neutrons
300
Is this an atom, element, or molecule?
Hydrogen Peroxide
H2O2
Its a molecule.
H2O2
There are multiple atoms.
There are atoms of different identities.
300
If there are two pieces of identical paper, and you crumple one of them to the size of your fist, which one would have more mass?
Both have the same amount of mass, but the crumpled one is more dense!
300
Which planet in our solar system has the most volume?
Jupiter (and it also has the most mass)
400
What is a possible control variable in this situation?
One tank of goldfish is fed the normal amount of food once a day, a second tank is fed twice a day, and a third tank four times a day during a six week study. The fish’s weight is recorded daily.
Possible Answers (Variables that we keep constant to keep the experiment as fair as possible)
The type of food.
The tank with the normal amount of food.
The amount of water in each tank.
The species of fish.
The number of fish in each tank.
The time of day they are fed.
The temperature of the tanks.
The decorations in the tank.
400
If an atom has more protons than electrons, what would the atom be more positively or negatively charged?
The atom would be positively charged.
400
Which of these examples can be considered elements?
S8 C6H12O6 I2
O F2O2 Br2
S8 C6H12O6 I2
O F2O2 Br2
400
Why do you weigh more on Earth than you do on the moon?
The Earth has a larger mass, and a greater gravitational pull.
The moon is a smaller mass, which means it has less gravitational pull.
400
If a dog jumps into a pool filled with 5,200 mL of water, because its a summer day and he doesn’t want to be a hot dog, what would be its volume if the water level rose to 6,300 mL?
Volume of the Pool with the Dog
- Starting Volume of the Pool
= Dog’s Volume
6,300 mL - 5,200 mL = 1,100 mL
The dog has a volume of 1,100 mL
500
Which of these is the dependent variable?
You decide to clean the bathroom. You notice that the shower is covered in a strange green slime. You decide to try to get rid of this slime by adding lemonade juice. You spray half of the shower with lemonade juice and spray the other half of the shower with water. After 3 days of spraying equal amounts 3 times a day, there is no change in the appearance of the green slime on either side of the shower.
The amount of slime on the shower after different types of cleaning solution.
Reason: It is the variable that might change based on the independent variable we are changing. It DEPENDS on it.
500
If an atom has five neutrons, six protons, and 8 electrons, what is the overall charge of the atom?
The overall charge would be -2.
Neutrons = 0(6)
Protons = +6
Electrons = -8
+6 - 8 = -2
500
Which of these can be considered a molecule AND an element?
O3 CH4 F
C6H12O6 Au I2
Which of these can be considered a molecule AND an element?
O3 CH4 F
C6H12O6 Au I2
500
Your cat is balancing on a triple beam balance while you are doing an experiment. Ooof, cats amrite?
It just so happens you know your cat is 800 g.
You see that the large block is at 400g, the medium block is at 90g, and the small block is 45g.
How much mass would you need to add to balance the tool?
800g -(400g + 90g + 45g) = 800g - 535g
= 265g
500
What is the relationship between density and temperature?
As temperature increases, the density of an object will decrease.
As temperature decreases, the density of an object will increase.