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31 Cards in this Set
- Front
- Back
What is not a major element present in the human body |
Iron |
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What is not a subatomic particle |
Isotope |
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The total number of electrons in an atom equal the number of |
Protons in its nucleus |
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An atom can be described as chemically stable if its outermost shell contains |
Eight electrons |
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Isotopes are atoms of elements that differ in their number of |
Neutrons |
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Ionic bonds are chemical bonds formed by the |
Transfer of electrons from one atom to another. |
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Chemical bonds formed by the sharing of electrons is called |
Covalent |
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Who proposed the concept that all matter is composed of atoms |
Chemist John Dalton |
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O |
Oxygen |
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Ca |
Calcium |
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K |
Potassium |
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Na |
Sodium |
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Mg |
Magnesium |
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Fe |
Iron |
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Se |
Selenium |
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An ionic bond may also be referred to as |
Electrovalent |
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What is anything that has mass and occupies space |
Matter |
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What is a bond that results from an unequal charge distribution on molecules |
Hydrogen bond |
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Helium is what? |
Inert or stable element |
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What is a good example of the bodies ability to form new tissue in wound repair? |
Synthesis reaction |
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When two different reactants exchange components and, as a result , form two new products they are known as |
Exchange reaction |
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What breaks down food molecules into smaller units? |
Catabolism |
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The form of energy that cells generally use |
ATP |
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All the chemical reactions that occur in body cells is called ? |
Metabolism |
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What joins simple molecules together to form more complex ones? |
Anabolism |
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What is a key chemical reaction during anabolism? |
Dehydration synthesis |
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Which of the following is not a property of water? |
Strong acidity |
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What do acids do? |
Release hydrogen ions when in a solution |
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What are substances that accept hydrogen ions referred to as? |
Bases |
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The constancy of the pH homeostatic mechanism is caused by the presence of substances called? |
Buffers |
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Milk is what on the pH scale? |
Acidic |