Midterm Jeopardy 1

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Midterm Jeopardy 1
Scientific Methods Characteristics of Living Things Characteristics of Living Things 2 Chemistry Randoms
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What are the steps to the Scientific Method?
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1. Observing/Asking Questions
2. Making inferences/Forming hypotheses
3. Conducting a controlled experiment
4. Collecting/analyzing data
5. Drawing conclusions

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Think of an EVERYDAY example In which you use
the scientific method
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Answers May Vary
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What are CONTROLLED variables? Define Provide
Example
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Definition what remains UNCHANGED IN AN
EXPERIMENT. Example Time, light,
temperature, availability of nutrients etc.
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Identify 4 of the 8 features of life
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1. Cells are the basic unit of life
2. growth/development
3. obtain and use energy
4. Reproduction
5. response to stimulus
6. taken as a group living things evolve
7. maintain a stable internal environment
8. living organisms have a universal genetic code-DNA

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What is homeostasis?
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Maintaining a stable internal Environment! HAPPY
HEALTHY
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What is metabolism?
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The combination of chemical reactions through
which an organism builds up or breaks down
materials When metabolism stops, An organism
CANNOT perform life functions ? DEATH ?
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What is a CELL?
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basic unit of all forms of life
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Identify 4 of the 8 features of life That have
NOT been mentioned.
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1. Cells are the basic unit of life
2. growth/development
3. obtain and use energy
4. Reproduction
5. response to stimulus
6. taken as a group living things evolve
7. maintain a stable internal environment
8. living organisms have a universal genetic code-DNA

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Why is it important for cells to have ATP??
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All living organisms (auto/heterotrophs) must
undergo some type of cellular respiration to
produce ATP ENERGY!!!!!!!!!!!
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Identify Each!
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Follow Up What are the HONC Elements? How many
bonds are needed to make them stable?
Hydrogen 1 Oxygen 2 Nitrogen 3 Carbon
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Whats the difference?
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• Protons and Neutrons have about the same mass
• Protons and neutrons are bound by strong forces
  which form the nucleus ? or center of the atom

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• Define the following
• Atom
• Molecule
• Element
• Compound

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• Define the following
• Atom The Basic Unit of ALL matter
• Molecule the structure that results when atoms
  are joined together by covalent bonds
• Element a pure substance that consists entirely
  of one type of atom
• Compound A substance formed by the chemical
  combination of two or more elements in definite
  proportions

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What is the Valence Shell? Or Valence Electrons?
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• Valence Electrons
• the electrons in an atom that are available to
  form bonds
• these are unpaired electrons which are found in
  the outermost energy level of the atom's electron
  cloud.
• Determine STABILITY and REACTIVITY

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Identify ALL Coefficient Subscript
Reactants Products Arrow
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Identify ALL
Reactants
Products
Yield Sign
Coefficient
Subscript
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Why can organisms NOT live forever? What happens??
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Over time there is damage to DNA and cells Wear
out, despite constant maintenance and repair
throughout the organisms life time Cannot
always maintain homeostasis in all environmental
conditions Cannot continue its metabolism and
maintain homeostasis, its life will cease.
Earth has a limited supply of resources Death
materials in cells are recycled back into the
environment for use by new generations of living
things
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This is the structural formula for what compound?
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Ammonia NH3
Remember to create your structural formulas,
determine Bond Availability LOOK AT THE
PERIODIC TABLE!
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What is the Law of Conservation of Matter?
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• The Law of the Conservation of Matter
• Matter (atoms and elements) in a chemical
  reaction cannot be created nor destroyed.
• Only the arrangement of the atoms is changed.
  Not the number or types

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Determine the Number of Atoms of Each Element
Chemical Name Chemical Formula Numbers of Atoms of Each Element
Methane CH4 C H
Water H2O H O
Carbon Dioxide CO2 C O
Ammonia NH3 N H
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To determine atoms VIEW THE SUBSCRIPT If a
coefficient is present remember to
multiply (Subscript x Coefficent Total Atoms of
the Element)
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On a graph (X vs. Y axis), where do you plot
INDEPENDENT VARIABLES? DEPENDENT VARIABLES?
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DEPENDENT
INDEPENDENT