1.when the vegetables or fruits turn into brown, the materials undergo______.
a .chemical change
b. physical change
c. emotional change
d. social change
2.rhain wiped the top of the table with a wet piece of cloth. after a few minutes, then it become dry. why does the table dry up so quickly
a. presence of heat
b. absence of heat
c. presence of water
d. absence of temperature
3.paulo get a nail and sets it aside in a container without a cover. after a few weeks, then it has rust. why does the nail have rust
a. presence of oxygen
b. absence of oxygen
c. presence of water
d. absence of temperature
4.which is the not true in the statements below
a burning a paper is form of physical change
b cutting a banana in half is an example of physical change
c. the melted candle is a form of chemical change
d. freezing water is a form of physical change.
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Answer:
1.B
2.A
3.D
4.B
Explanation:
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Answer:
B.
A.
D.
B
that is the answer