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Nature of Science
Properties of Matter
Physical and Chemical Properties/Changes
Atoms, Elements, Compounds and Mixtures
Cycling of Matter and Energy
100
Variable (Independent or Dependent) that is usually found on the x-axis of a graph. (42-43) A. What is the independent variable B. What is the dependent variable C. What is the Constant D. What is the Control
A. What is the independent variable
100
This describes the amount of matter in an object.(299) A. What is Weight B. What is Density C. What is Volume D. What is Mass?
D. What is Mass?
100
True or False: Observing a physical property of a substance changes the identity of the substance. Explain. (314)
What is False. Explain your answer
100
The smallest particle that a substance can be divided into and still be the same substance. (353) A. What is an atom B. What is an element C. What is a compound D. What is a mixture
A. What is an atom
100
Name 2 products of photosynthesis (405)
What are oxygen and glucose (C6H12O6). Do you also know: What are reactants of photosynthesis?
200
Jalen is conducting an experiment to determine whether temperature affects how fast earthworms move. What is the DEPENDENT variable? (42) A. What is the temperature B. What is speed of earthworm (how fast they move)
B. What is speed of earthworm (how fast they move)
200
A graduated cylinder contains 40 ml of water. After a marble is dropped into the cylinder, the water level rises to 48ml. What is the volume of the marble? (304) A. What is 10 ml B. What is 88 ml C. What is 8 ml D. What is 22 ml
C. What is 8 ml
200
Vinegar reacts with baking soda. (334) Physical or Chemical change?
What is chemical change. REACTS!
200
A combination of elements and/or compounds that are NOT chemically combined is called a ________________.(353) A. What is a compound B. What is a pure substance C. What is a mixture D. What is an atom
C. What is a mixture
200
In what organelle does cellular respiration take place?(406) A. What is Chloropast B. What is Mitochondria C. What is Photosynthesis D. What is Cytoplasm
B. What is the mitochondria. Do you also know: In what organelle does photosynthesis take place?
300
A type of investigation that allows scientists to control variables is a(an) ________________.(28) A. What is a hypothesis B. What is a conclusion C. What is an experiment D. What is a physical change
C. What is an experiment
300
The density of water is 1 g/ml (or 1 g/cm3). If another object has a density of 0.6 g/ml will it sink or float?(306)
What is float. Density greater than 1 = sink Density less than 1 =float
300
Carbon combines with oxygen to form carbon dioxide gas. (334) Physical or chemical change?
What is chemical change. FORMS!
300
Name the 2 subatomic particles that are located in the nucleus of an atom. (368)
What are the proton and neutron. Do you also know: Where is the electron located?
300
What does the law of conservation of energy state?(417)
energy cannot be created or destroyed
400
True or False: Scientific theories can change over time.
What is True. Do you also know: Why would a theory change over time?
400
An object has a mass of 360 g. The volume of the object is 60 cm3. What is the density of the object? (306)
What is d=m/v d=360g/60cm3 d=6g/cm3
400
Water breaks down into hydrogen and oxygen gas. (334) Physical or chemical change?
What is chemical change BREAKS DOWN!
400
Most elements on the periodic table of elements are: metalloids, metals or nonmetals?(380-381)
What are metals. Zigzag line are the 6 metalloids. Right side are nonmetals (19) Left and middle are the metals.
400
Where in an energy pyramid is the most energy? (p418)
What is the base (bottom) or producers. Do you also know: How much energy moves up each level?
500
Experiments should be repeated multiple times by the original investigator. This is known as _________________ (34) A. What is repetition B. What is replication C. What is multiple ideas
A. What is repetition
500
Name 2 physical properties of aluminum foil. (316-317)
What is mass, volume, density, thermal conductivity, luster (shine), malleability
500
What are 2 signs that a chemical change has occurred?(334)
What is - change in color, - gas produced (fizzing, bubbling, foaming), - odor produced, - precipitate forms - change in temperature (energy changes form)
500
What 4 things are found on each square of the periodic table? (380-381)
Atomic number - what is this? Atomic mass - what is this? Chemical symbol - give an example Chemical name - give an example
500
In an ecosystem, which would have a larger population, producers or tertiary consumers? Explain.(418)
What is PRODUCERS b/c they are at the bottom of the energy pyramid (which is bigger) B/c only 10% of energy moves up, there is less available energy as you move up. At the highest level, the population will be smallest b/c of limited amount of energy available to them (limiting factor)