A physical change occurs when a material changes state, these can include color, luster, melting/boiling point, hardness etc. Since the boiling point of water is changing state therefore it is a physical change
The temperature of a glass does not change state, it is just heated due to the boiling water
The answer to this question should be 3. <span>adding research resources during an investigation
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The answer 1 and 2 are similar. Discovering a new variable mean that you wouldn't control it at the beginning of the research. It would be too late if you try to control it. Incorrect measurement definitely will cause an error.
Answer:
There are 18 moles of oxygen in 3.0 mole of glucose...
Explanation:
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Answer:
Protons and neutrons have very similar mass, while electrons are far lighter, approximately 11800 times the mass. Protons are positively charged, neutrons have no electric charge, electrons are negatively charged. The size of the charges is the same, the sign is opposite
Explanation:
