Science Experiment
How can you generate confidence in a hypothesis?
A. Eliminating predictions.
B. Repeated testing without falsification
C. Using the correct science equipment
D. Using a great hypothesis
B. Repeated testing without falsification
Name the two regions of an atom and where the three subatomic particles reside in the two regions. (Protons, Neutrons, Electrons)
Nucleus: Protons and Neutrons
Outer Cloud (Orbitals): Electrons
What is the term and symbol for this value: 1,000,000?
Term: Parts per million
Symbol: ppm
Hydroxide Bases release H+ into solution by ionizing a bond to an H. True or False.
A. True
B. False
B. False
Name the functional group shown.
NH2
Amino Group
A patient reports severe stomach and head pain. The doctor observes the patient and finds swelling in the brain, and inflammation of the stomach lining. Which is a sign and which is a symptom.
A. Symptom, sign
B. Sign, Symptom
A. Symptom, Sign
What is the number of protons, neutrons, and electrons for the element Boron?
Protons = 5
Neutrons = 5
Electrons = 5
In liquid water, the action of forming/reforming H-
bonds allows H2O molecules to condense like a crowd at a party. Which water property does this describe?
A. Expand upon freezing
B. High Heat Capacity
C. Cohesion and Adhesion
D. Dissociates and Dissolves
A. Expand upon freezing
True or False.
A. True
B. False
A. True
Name the functional group listed:
COOH
Carboxyl Group
Name the four things science seeks from nature.
Match the atom with the correct equation.
Isotope
Ion
Neutral
Protons not = to Electrons
Protons not = to Neutrons
Protons = Electrons = Neutrons
Isotope: Protons not = to Neutrons
Ion: Protons not = to Electrons
Neutral: Protons = Electrons = Neutrons
Water molecules form hydration shells around ions and about partially charged molecules (opposite charge attractions). Which water property does this describe?
A. Expand upon freezing
B. High Heat Capacity
C. Cohesion and Adhesion
D. Dissolves and Dissociates
D. Dissolves and Dissociates
Compare the pH of 5 and pH of 11. Which is more acidic and by how many times?
pH 5 is 1,000,000 (106) times more acidic than pH 11.
What is the monomer of polysaccharides and triglycerides?
A. Monosaccharides and phospholipids
B. Glucose and steroids
C. Carbohydrates and Lipids
D. Monosaccharides and Fatty Acids
D. Monosaccharides and Fatty Acids
List the 6 steps of the hypothetic-deductive method.
Observation, Hypothesis, Prediction, Test, Results, and Conclusion.
A bond that has a very strong relative strength, shares electrons equally and is not likely to dissociate in H2O. Which bond does this describe?
A. Polar Bond
B. Ionic Bond
C. Nonpolar Bond
D. Hydrogen Bond
C. Nonpolar Bond
What is the molarity of a solution that contains 10 grams of Silver Nitrate (AgNO3) that has been dissolved in 750 mL of water?
0.078M
What is the pH of a solution that has a [-OH] of 4?
pH = 10-10
What is a trait only found in phospholipids that are found in cell membranes?
Phospholipids are amphipathic. The phosphate head is the polar region of the lipid and the fatty acid tails are the nonpolar region.
Male octopuses are split into two groups. One is tested on and the other is not. The octopus group that is tested on is given a pair of glasses to make them appear less threatening to female octopuses. The female octopuses are fed before the experiment is conducted to rule out hunger. The male octopuses are still strangled by females even with the glasses. The recorded number of strangulations stays the same. Define the control group, experimental group, experimental variable, confounding variable, and dependent variable from this example.
Control Group: Octopus group that was not tested on.
Experimental Group: The octopuses that were given the glasses.
Experimental Variable: The glasses.
Confounding Variable: Hungry Female Octopuses.
Dependent Variable: Recorded number of strangulations.
A δ+ region of one molecule can attract to a δ– region of another molecule or ion forming a physical bond.
When such a bond involves H atoms we call it a _________.
A. Nonpolar Bond
B. Polar Bond
C. Hydrogen Bond
D. Ionic Bond
C. Hydrogen Bond
Find the volume of a 0.75 M solution if it contains 39 grams of potassium hydroxide (KOH).
0.93 L or 930mL
What is the [-OH] when the [H+] = 8?
[-OH] = 6
What causes a kink in unsaturated fats?
C=C or one or more cis bonds
Double bonded carbons in a carbon chain.