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Questions and Answers
What is mass?
How is weight defined?
In what units do scientists usually measure mass?
In what units do scientists usually measure weight?
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Is weight the same everywhere?
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Why is there confusion regarding the difference between mass and weight?
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What is the relationship between mass and weight?
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How does gravity affect objects?
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What determines the strength of the gravitational force between two objects?
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How does mass relate to acceleration according to Newton's second law?
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What is a person's weight influenced by?
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What does a gravitational field represent?
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Why do objects with small masses have weak gravitational fields?
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What is the role of gravity in the formation of the solar system?
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Why do planets orbit the sun rather than the other way around?
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Why do people feel Earth's gravity but not the gravitational fields of other planets?
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Why are planets and stars roughly spherical in shape?
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What determines an atom's elemental identity and many of its properties?
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What makes water different from hydrogen and oxygen?
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What determines the reactivity of an element and many of its properties?
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What is the main difference between metals and non-metals?
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What is an atom made up of?
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What makes each element unique?
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What defines a compound in chemistry?
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What is the charge of an electron?
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Who proposed the first major atomic model and described atoms as the fundamental unit of matter?
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What did Ernest Rutherford discover about the structure of the atom?
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Which element has the atomic symbol 'C' and the atomic number 6?
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Who developed the cloud model of the atom, stating that electrons travel in a cloud around the nucleus?
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What determines an atom's chemical and physical properties?
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What is an element primarily made of?
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Which type of substances can be broken down into separate elements?
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What is the difference between a molecule and a compound?
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What are mixtures composed of?
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What are chemical bonds best described as?
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What characterizes an ionic bond?
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What is a key difference between ionic and covalent compounds?
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Which compound requires more energy to break its bonds?
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What is the primary difference between compounds and elements?
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