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Nature of Science
Matter
Measuring Matter
Carbon Cycle
Chemistry
100
Distinguish between repetition and replication.
Repetition is repeating your own experiment Replication is repeating another person's experiment
100
Which state of matter has a fixed volume, but no fixed shape?
Liquids
100
Describe the difference between the weight of a golf ball and the mass of that same golf ball?
Mass is the amount of matter in an object. Weight is the measure of gravitational force on an object.
100
What is produced by the process of photosynthesis?
sugar and oxygen gas
100
What subatomic particles make up an atom and where are they located?
Protons and neutrons are inside the nucleus, electrons are outside the nucleus
200
A scientists wants to know whether or not flies are attracted to a certain color. They have four containers of sugar water, one is left clear, one gets red food coloring, on gets green food coloring, and one gets blue food coloring. Then the scientist records the number of flies that go to each container in a 30 minute time period. What is the independent variable in the experiment?
The different colors of sugar water
200
What is the difference between a chemical and physical change?
A chemical change alters the chemical properties of a substance and usually cannot be easily reversed. A physical change is a change in size, shape, or state of matter. It is usually easily reversible.
200
An unknown object has a mass of 1000g, what additional information do you need to calculate it's density? Explain what you would do with that information.
You need it's volume. Then you divide mass by volume to find density.
200
Explain how life on Earth depends on photosynthesis.
Without photosynthesis oxygen would not be released into the atmosphere.
200
DOUBLE JEOPARDY!!!! What is the difference between an element, compound, and mixture?
Element is a pure substance made of only one type of atom. Compound is a pure substance made of more than one type of atom chemically combined. A mixture is an impure substance made of one or more type of particle, not chemically combined.
300
A scientists wants to know whether or not flies are attracted to a certain color. They have four containers of sugar water, one is left clear, one gets red food coloring, on gets green food coloring, and one gets blue food coloring. Then the scientist records the number of flies that go to each container in a 30 minute time period. What is the dependent variable in the experiment?
The number of flies that go to each container
300
DOUBLE JEOPARDY!!!! How is plasma different from the other three states of matter? Give an example of plasma.
Plasma is a state of matter in which the particles have been ionized which reduces the number of electrons. The Sun and stars are made of plasma.
300
What instrument do you use to measure mass? What instrument do you use to measure weight?
To measure mass - a triple beam balance (units = grams) To measure weight - a scale (units = Newtons)
300
What are the products of the cellular respiration process?
Energy, water, and carbon dioxide.
300
How are elements arranged in the periodic table?
By atomic number
400
A scientists wants to know whether or not flies are attracted to a certain color. They have four containers of sugar water, one is left clear, one gets red food coloring, on gets green food coloring, and one gets blue food coloring. Then the scientist records the number of flies that go to each container in a 30 minute time period. What is the control variable in the experiment?
The un-colored sugar water
400
Think about putting a glass of water on the counter, in the freezer, and on a hot stove. How does the temperature of the water affect its kinetic energy and physical state?
The lower the temperature the less kinetic energy and the higher the temperature the more kinetic energy. Solids have less kinetic energy and gases have more. Liquids are in between.
400
A students wants to find the density of a cube of zinc. He finds the mass to be 42 grams. The length of the cube is 10 cm. What is the density?
density = 0.042 g/cm^3 calculations: mass = 42 g volume = 10x10x10= 1000 cubic centimeters density= mass/volume = 42/1000 =
400
Explain how life on Earth depends on cellular respiration.
Without cellular respiration, most organisms would not be able to produce the energy necessary for metabolism.
400
Compare the masses and charges of the three subatomic particles.
Protons are positive with a mass of 1 amu. Neutrons are neutral with a mass of 1 amu. Electrons are negative with an extremely small mass (almost 0).
500
A scientists wants to know whether or not flies are attracted to a certain color. They have four containers of sugar water, one is left clear, one gets red food coloring, on gets green food coloring, and one gets blue food coloring. Then the scientist records the number of flies that go to each container in a 30 minute time period. What kind of data was collected?
Quantitative (using numbers)
500
Describe a physical change that illustrates the conservation of mass
Answers may vary Example: Cutting a paper in half
500
A large tree log will float but a penny will sink. What can you infer about the volume, mass, and density of the log as compared to the penny?
The log has a larger volume and mass than the penny, but a lower density so it can float in water.
500
Create a food chain, food web, or energy pyramid to show how energy flows.
Answers may vary
500
How many protons, neutrons, and electrons are in a Sodium atom?
P - 11 N- 12 E - 11