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Lady bird [3.3K]
2 years ago
5

Is making a sandwich a chemical or physical change?

Biology
2 answers:
kolbaska11 [484]2 years ago
8 0

Answer:

Physical Change

Explanation:

A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. Chemical changes occur when a substance combines with another to form a new substance

Sphinxa [80]2 years ago
3 0

Answer: It is a physical change.

Explanation:

Even though they make  sand which they are still meat bread and cheese.  The reactants stay as there ware even though they have taken a different form.  It is like boiling water or freezing it. They look different but the reactants stay the same.

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The two DNA strands unwind from one another during semi-conservative replication, and each serves as a template for the synthesis of a new, complementary strand. Two DNA molecules are produced as a result, each with one original and one new strand.

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On several sources of replication along the DNA template strand, DNA replication takes place (antinsense strand). One original strand and one freshly synthesized strand are included in every copy. Although it should be guaranteed that both copies are identical, Each strand of the double helix would act as a template for the manufacture of a new strand, according to the structure of DNA (which was discovered by James D. Watson and Francis Crick in 1953). The process by which freshly created strands united with template strands to create two double helix DNA molecules was unknown.

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