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9 Cards in this Set
- Front
- Back
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What is the definition of matter?
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Anything that takes up space and has mass.
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What is the difference between mass and weight?
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Mass is the amount of matter in an object and weight is how strongly mass is pulled by gravity.
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What is an element?
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A substance that cannot be broken down to other substances by chemical reactions.
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What is a compound?
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A substance consisting of two or more different elements combined in a fixed ratio.
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True or False: Compounds have the same characteristics of it's elements.
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False. They take on a different characteristic when the elements combine.
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What are the four elements that make up 96% of living matter?
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Carbon, Oxygen, Hydrogen, and Nitrogen
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What are the 7 elements that make up 4% of human bodyweight?
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Calcium
Phosphorous Potassium Sulfur Sodium Chlorine Magnesium |
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What are trace elements?
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Required by an organism in minute quantities
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What does Iodine deficiency cause and what can prevent it?
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Iodine deficiency causes Goiter, a thyroid problem that can be helped with salt.
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