physical science honors chapters 6 sections 1,2,4
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is a compound? | Two elements that are chemically combined in a fixed ratio
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| what are chemical bonds? | the attractive forces that hold different atoms or ions together
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| Ammonia,vinegar,sand,sugar,rubbing,alcohol, water(H2O) | examples of compounds
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| chemical formula | short hand way of writing a chemical name
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| subscripts | tells the # of atoms
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| superscripts | tells the charger or oxidation
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| ionic bonds | network structure(strong bond), high melting point, dissociate in water, gain and lose e-
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| covalent bonds | molecule structure(weak bond), share electrons,low melting do not dissociate in water
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| what is common between covalent and ionic bonds? | both try to make elements happy(stable)
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| what is a ion? | an atom that is either a positively(cation) or negatively(anion) charged
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| what is a ionic bond? | the force of the attraction between the opposite charges of ions(metal/nonmetal)
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| what is a molecules? | neutral particles formed as a result of electrons sharing
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| what is a covalent bond? | the bond between atoms when they share electrons(happens between two nonmetals)
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| Non-polar | in a molecule when the atoms share evenly
Ex:H2,N2,O2,F2,Cl2,Br2,I2
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| polar | when one atom is has a stronger attraction for the electrons than the other
Ex:CO2,H2O
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| what is a polyatomic ion? | a group of covalently bonded atoms that have either lost or gained electrons.
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| a metallic bond | a bond formed by the attraction between positively charged metal ions and the electrons around them Ex:Cu,Au,Ag,Zn
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| organic | most any covalently bonded atom that contains carbon in it(anything that is alive)
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| inorganic | most compounds that do not contain the element carbon Ex:CO,CO2
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