Ques: Answer the following question given this paragraph: Carbon can form two different compounds with oxygen. Q: What element can form two different compounds with oxygen? Choices: - dioxide - H20 - hydrogen - carbon A:
Ans: carbon

Ques: Answer the following question given this paragraph: The temperature at which a substance boils and changes to a gas is called its boiling point. Boiling point is a physical property of matter. The boiling point of pure water is 100C. Other substances may have higher or lower boiling points. Several examples are listed in the Table below . Pure water is included in the table for comparison. Q: What is the term for when a substance boils and changes to gas? Choices: - activation point - changing point - reaction point - boiling point A:
Ans: boiling point

Ques: Answer the following question given this paragraph: Amphibians breathe with gills as larvae and with lungs as adults. They have a three-chambered heart and relatively complex nervous system. Q: What type of animals breathe with gills as larvae and with lungs as adults? Choices: - insects - reptiles - mammals - amphibians A:
Ans: amphibians

Ques: Answer the following question given this paragraph: 2. Sedimentary rocks form when sediments are compacted and cemented together ( Figure below ). These sediments may be gravel, sand, silt or clay. Sedimentary rocks often have pieces of other rocks in them. Some sedimentary rocks form the solid minerals left behind after a liquid evaporates. Q: What kind of rock forms when material such as gravel, sand, silt or clay is compacted and cemented together? Choices: - ingenious - limestone - craters - sedimentary A:
Ans:
sedimentary