The student knows that matter has physical and chemical properties and can undergo physical and chemical changes. The student is expected to distinguish between physical and chemical changes in matter.
Diagram the flow of energy through living systems, including food chains, food webs, and energy pyramids.
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Q 1/8
Score 0
Hay is made up of organic compounds. What are the main elements in many organic compounds?
60
Sodium, hydrogen, nitrogen
Radon, oxygen, helium
Carbon, hydrogen, oxygen
Helium, carbon, sodium
Q 2/8
Score 0
Students in a science class made ball-and-stick models of the substances they were studying. The key shows the elements the students used in their models. Which model represents an organic compound?
60
#texas/62c6244f-5fe8-458c-9627-41b7ee665660/C.png
#texas/62c6244f-5fe8-458c-9627-41b7ee665660/A.png
#texas/62c6244f-5fe8-458c-9627-41b7ee665660/B.png
#texas/62c6244f-5fe8-458c-9627-41b7ee665660/D.png
8 questions
Q.
Hay is made up of organic compounds. What are the main elements in many organic compounds?
1
60 sec
7.6
Q.
Students in a science class made ball-and-stick models of the substances they were studying. The key shows the elements the students used in their models. Which model represents an organic compound?
2
60 sec
7.6
Q.
A student listed how different parts of the body work to aid in the digestion of food. Which of the following is a chemical change that occurs to the food?
3
60 sec
7.6
Q.
Many processes occur in the digestive system. Which process is best classified as a physical change?
4
60 sec
7.6
Q.
The flow of energy in some Australian food chains is modeled in the energy pyramid below. Based on the model, which consumers would receive the greatest amount of energy captured by the producers in their food chains?
5
60 sec
7.5b
Q.
6
60 sec
7.6
Q.
Four students were given a list of compounds and asked to identify which ones are organic. Which student correctly identified the organic compounds in the list?
7
60 sec
7.6
Q.
A student researching a northern forest ecosystem learns the following information about feeding relationships in the ecosystem. Which food web best represents the flow of energy in these feeding relationships?
