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The melting point of ice is 0°C: Fact
Repeated observations have consistently shown that oppositely charged objects attract each other: Law
When the elements carbon and nitrogen are mixed at 1500°C, they will react with each other: Hypothesis
Atoms are made of protons, neutrons, and electrons. Although we can’t directly see these particles, this structure explains many experimental observations: Theory
Scientific knowledge could be law, theory, fact or hypothesis.
The scientific fact is a verifiable observation. The statement "The melting point of ice is 0°C" is a scientific fact.
Scientific theories are well crafted explanations for observations. The statement; "Atoms are made of protons, neutrons, and electrons. Although we can’t directly see these particles, this structure explains many experimental observations" is a theory.
Scientific laws are crafted from observations that have been severally demonstrated to be true. The statement; "Repeated observations have consistently shown that oppositely charged objects attract each other" is a scientific law.
A scientific hypothesis is a tentative explanation that must be confirmed or disproved by experimental evidence. The statement; "When the elements carbon and nitrogen are mixed at 1500°C, they will react with each other." is a hypothesis.
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