Baseball

1
Baseball

• Natural Science
• Unit 1 Introduction to Science

2
Questions

• Identify the parts of the scientific method
• bservation
• urpose
• ypothesis
• xperiment
• ata
• onclusion

• Classify the statement below as quantitative or
  qualitative. 2.4 grams of antacid was needed to
  neutralize the acid.
• Answer Quantatitive

3
Questions

• On which axis would you put the independent
  variable, X or Y?
• Answer X axis

• A scientist wants to see which soap killed more
  bacteria, he cultured several petri dishes
  exposed them to the same amount of soap. At the
  end of the experiment he told a coworker, All
  the brands tested killed the same number of
  bacteria Is the statement in quotes a
  hypothesis, qualitative observation, quantitative
  observation, or conclusion?
• Answer Conclusion

4
Questions

• Why should there be only one variable in an
  experiment?
• Answer so that any results could be attributed
  to the variable nothing else

• Given the data below, explain how to calculate an
  average. 2.3 cm, 6.8 cm, 4.4 cm, 1.0 cm
• Answer Sum all data, divide by 4.

5
Analyze the two test groups below and determine
which factor is the variable.
Questions

• Group A
• Eight hours of sleep
• 1000 mg of vitamin C
• 3 well balanced meals

• Group B
• 3 well balanced meals
• 500 mg of vitamin C
• 8 hours of sleep

Answer Vitamin C
6
Questions

• What format should be used when writing a
  hypothesis?
• Answer Ifthen..

• What is a Control Group?
• Answer A group in an experiment that does not
  receive/exposed to the variable being tested

7
Questions

• Which line indicates a more acidic solution, red
  or yellow?
• Answer RED
  
  
  
  
  
  
  

• A piece of red litmus paper is dipped in unknown
  solution comes out blue, what does this mean?
• Answer Solution is alkaline (basic)

8
Questions

• The unknown substance had a flower-like smell,
  quantitative or qualitative?
• Answer Qualitative

• Which is known as a proton donor, acid or base?
• Answer Acid

9
Remember the two test groups from earlier? Here
is the scientists hypothesis If a subject
increases their level of vitamin C, then they
will run faster. Which group is the control
group?
Questions

• Group A
• Eight hours of sleep
• 500 mg of vitamin C
• 3 well balanced meals

• Group B
• 3 well balanced meals
• 5000 mg of vitamin C
• 8 hours of sleep

Answer Group A
10
Questions

• Read each of the three statements and indicate if
  it best describes an acid or a base
• Bitter taste
• Slippery feel
• pH from 0-6.9

• When acids and bases of equal strength are mix,
  the reaction is called .
• Answer Neutralization

Base
Base
Acid
11
Questions

• HCl NaOH ? NaCl H2O Using this equal
  identify the acid base
• Answer HCl Acid, NaOH Base

12
Questions

• pH is used, and the paper turns dark orange, use
  the scale to determine pH
• Answer 3

• What is phenolphthalein?
• Answer An indicator which will turn pink in the
  presence of a base.

13
Questions

• In what area would you expect to find lemons,
  white, red or yellow?
• Answer White

• What do you call any information obtained by your
  senses?
• Answer Observation

14
Questions

• Acid Base ? ? ? When an acid base of
  equal strength are put together, a neutralization
  occurs, what two products are formed?
• Answer Acid Base ? Salt Water

15
Questions

• The solution had a pH of 6.2. Qualitative or
  Quantitative?
• Answer Quantitative

• If Quick grow fertilizer is added to a plants
  soil, then its growth will increase. This
  statement is a ...
• Answer Hypothesis