Science Grad Exam
Terms
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In the Periodic Table, the number given below the symbol for the element is the:
A. number of protons
B. atomic mass
C. number of electron shells
D. the atomic number
- B. atomic mass
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A collection of observed and measureable results is called:
A. Results
B. Data
C. Scientific Process - B. Data
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A judgement based on the data gathered in an experiment is:
A. a skill
B. an hypothesis
C. a conclusion
D. an observation - C. a conclusion
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A situation maintained in an experiment in which no variable conditions are introduced is:
A. control group
B. experimental group - A. Control Group
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Graduated cylinders are marked with:
A. grams
B. meters
C. millimeters
D. milliliters - D. milliliters
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To forecast an event or to anticipate the results of an experiment is called:
A.Results
B.Observation
C.Prediction - C. Prediction
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In an experiment, one examines the variable conditions in the :
A. hypothesis
B. experimental group
C. control group
D. assimilation - B. experimental group
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Selected variable conditions for experimentation to support or reject a hypothesis are known as:
A. control group
B. experimental group - B. Experimental Group
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The length of your pencil would best be measured in units of:
A. centimeters
B. meters
C. kilometers
D. millimeters - A. centimeters
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A complete explanation of how or why something happens based on research and testing is known as:
A. Hypothesis
B. Theory - B. Theory
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What is the chemical symbol for cobalt?
A. Co
B. Ir
C. Ag
D. Si - A. Co
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A substance which exists alone or in some combination is:
A. a liquid
B. a solid
C. a gas
D. matter - D. matter
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Grams are used to measure:
A. mass
B. height
C. volume
D. size - A. mass
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Increased surface area ______ reaction rate.
A. decreases
B. increases
C. produces
D. stops - B. increases
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Isotopes are atoms that have:
A. the same # of protons but a different # of neutrons
B. the same # of neutrons but a different # of protons
C. the same mass
D. an equal # of protons and neutrons - A. the same number of protons but a different number of neutrons
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A form of matter which has a definite shape and volume is:
A. a solid
B. a liquid
C. a gas
D. plasma - A. solid
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The energy levels in an electron cloud consist of:
A. concentration of electrons
B. positive charges
C. concentration of energy
D. levels where no electrons are found - A. concentration of electrons
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A rubber band can be stretched out and will return to its original shape. This property of solids is called:
A. malleability
B. viscocity
C. elasticity
D. mass - C. elasticity
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A complete scientific explanation based on experimentation and investigation will help scientists formulate a:
A. hypothesis
B. law
C. theory
D. prediction - C. theory
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Substances to the left of the arrow in a chemical reaction are called:
A. catalysts
B. products
C. reactants
D. chemical equations - C. reactants
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Deuterium is an isotope of hydrogen which has an atomic mass of 2. How many neutrons must a deuterium have?
A. 0
B. 2
C. impossible to know
D. 1 - D. 1
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The molecules in gases are:
A. moving slowly
B. tightly packed
C. moving very fast
D. macroscopic - C. moving very fast
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One liter is equal to:
A. 1000 mL
B. 100 mL
C. 10 mL
D. 1000 centiliters - A. 1000 mL
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Some of the microscopic characteristics of matter are:
A. color, odor, and shape
B. density, structure, bonding
C. hardness and weight
D. feel, taste, solubility - B. density, structure, bonding
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You should report a chemical spill to your teacher:
a. immediately
b. after you've finished cleaning up the spill
c. only if you think the spill if dangerous
d. after you've finished the experiment so your results are not ruined - A. immediately
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How many neutrons do most atoms of flourine have?
A.9
B.10
C.18
D.19 - B. 10
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The mass of an average man would best be measured in:
A. cubic centimeters
B. liters
C. meters
D. kilograms - D. kilograms
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When a substance condenses, it changes from:
A. a liquid to a solid
B. a liquid to a gas
C. a gas to a liquid
D. a gas to a solid - C. a gas to a liquid
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The apple falling from the tree was basic to Issac Newton in proposing his theory about the movement of planets--an example of:
A. Inductive reasoning
B. Deductive reasoning
C. Extrapolation D. A theory
- B. Deductive reasoning
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Mixing salt and sugar is a :
A. physical change
B. chemical change
C. new substance
D. new compound - A. physical change
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An element that is in the same family as flourine is:
A. lithium
B. boron
C. chlorine
D. oxygen - C. Chlorine
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Which elements of the Periodic Table are radioactive?
A. Elements on left of Table
B. Elements w/atomic #'s >83
C. Elements w/atomic #'s <83
D. Elements on right of Table - B. Elements with atomic numbers greater than 83
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The amount of space an object takes up is measured by:
A. weight
B. mass
C. density
D. volume - D. density
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Snow melts to form water. This is an example of:
A. new substance
B. a chemical change
C. a physical change
D. temperature decreasing - C. a physical change
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In Kelvin temperature scale, water freezes at:
A. 0 K
B. 180 K
C. 273.15K
D. -273.15K - C. 273.15
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An example of a chemical change is:
A. freezing
B. rusting
C. boiling
D. condensing - b. rusting
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Neon has eight electrons in its outer shell. It is a:
A. alkali metal
B. alkaline earth metal
C. halogen
D. noble gas - D. noble gas
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The amount of matter in an object is called its:
A. volume
B. density
C. mass
D. size - C. mass
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A cubic centimeter is equal to:
A. 1 liter
B. 10 milliliters
C. 10 centiliters
D. 1 milliliter - D. 1 milliliter
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The statement, "An object fell 5 meters in 1 second." is :
A. a control
B. an observation
C. a conclusion
D. a theory - B. An observation
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Gathering information through observation and experimentation is a part of:
A. deductive reasoning
B. laboratory tools
C. the Scientific Method
D. measurements - C. the Scientific Method
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An element with no luster is:
A. silver
B. sulfur
C. zinc
D. aluminum - B. sulfur
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The entire collection of observations and results from an experiment is called:
A. evaluation
B. data
C. theory
D. control group - B. Data
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The final results of a science experiment can be summarized in a:
A. conclusion
B. a written report
C. graph
D. all of the above - D. All of the above
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The volume of a liquid held in an eyedropper would best be measured in:
A. milllimeters
B. milliliters
C. milligrams
D. cubic centimeters - B. Milliliters