B. Physical change; physical property of flammability
C. Chemical change; chemical property of reactivity
D. Chemical change; chemical property of flammability
Answer:
C = chemical change, chemical property of reactivity.
Explanation:
Chemical change:
The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.
These changes are irreversible
These changes occur due to chemical reactions
These may not be observed with naked eye
Example:
The reaction of iron with air in the presence of water lead to the production if ion oxide which is called rusting. It is a chemical change.
Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood
Boiling of egg: that change the chemical composition of protein in the egg
The reaction of Hydrogen and oxygen:
H 2 (g) + O 2 (g) -------------------------------------> 2H 2O (l)
Physical Change:
The changes that occur only due to change in shape or form but their chemical or internal composition remain unchanged.
These changes were reversible.
They have same chemical property.
These changes can be observed with naked eye.
Example
Water converting to Ice
Water converting to gas
In this water molecule remain the same only they rearrange themselves that change its state of mater not composition
Answer:
C) Chemical Change; Chemical Property of reactivity
Explanation:
I took the test
Yes, boredom is a likely explanation for the spider monkeys’ behavior.
No, emotions of non-human organisms cannot be tested.
Yes, the hypothesis could be tested through a controlled experiment.
Answer: Nucleus
Explanation:
The nucleus is referred as the brain of the cell because it contains the genetic information necessary to carry out cellular functions.
Inside the nucleus, there is the genetic material called chromosomes, made of DNA that carry the necessary instructions to direct cell activities. Because, DNA carries information necessary for the synthesis of proteins that form tissues and perform various biological functions. The functions of proteins are to maintain their integrity, defend themselves against external agents, repair damage, control and regulate functions, and others.
Practically, proteins are in charge of almost everything in the organism. And since they are made according to the information encoded in the genetic material inside the nucleus, this organelle is called the brain of the cell.
The nucleus is referred as the brain of the cell because it contains the genetic information necessary to carry out cellular functions.Thus, the answer is nucleus.
Inside the nucleus, there is the genetic material called chromosomes, made of DNA that carry the necessary instructions to direct cell activities. Because, DNA carries information necessary for the synthesis of proteins that form tissues and perform various biological functions. The functions of proteins are to maintain their integrity, defend themselves against external agents, repair damage, control and regulate functions, and others.
Practically, proteins are in charge of almost everything in the organism. And since they are made according to the information encoded in the genetic material inside the nucleus, this organelle is called the brain of the cell.
Thus, the organelle which is like brain of the cell is nucleus.
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