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47 Cards in this Set
- Front
- Back
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What bonds do and do not dissolve in water? |
Do: ionic and polar covalent Do not: nonpolar covalent, metallic |
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What bonds do and do not conduct electricity? |
Do: ionic Do not: polar covalent |
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What bonds do and do not have low melting points? |
Do: nonpolar covalent Do not: metallic |
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Very soft compounds |
nonpolar covalent |
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conducts electricity when dissolved |
ionic |
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malleable and ductile |
metallic |
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soluble in water but not electrically conductive |
polar covalent |
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Metallic substances contain an ____ ___. |
Electron Sea |
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metallic substances form structures that are __ and __. |
ductile and malleable |
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metallic compounds _____ dissolve in water. |
do not |
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very common ionic compound? |
salt, sodium chloride, NaCl |
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ionic compounds form strong ____ structures with ___ melting points. |
crystal, high |
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ionic compounds are usually ___ solids |
hard |
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ionic compounds _______ in water. |
dissolve |
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dissolved ionic compounds ______ electricity. |
conduct |
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If a molecule is symmetrical, it is considered __________. |
nonpolar |
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Nonpolar molecules have _______ intermolecular forces, meaning: |
weak, they do not attract other molecules very much |
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nonpolar covalent compounds form ___ structures with _______ melting points |
soft, very low |
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nonpolar covalent compounds _____ dissolve in water |
do not |
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many nonpolar covalent compounds have ___________. |
distinctive odors |
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if the molecule is asymmetrical, it is considered |
polar |
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____ molecules have stronger intermolecular forces |
Polar |
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Polar covalent compounds form ___ structures with melting points... |
hard, lower than ionic compounds but higher than nonpolar compounds |
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polar covalent compounds ________ dissolve in water. |
do |
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dissolved polar covalent compounds ____ conduct electricity |
do not |
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Five indicators of a chemical reaction |
1. Color change 2. Drastic temperature change 3. Formation of a precipitate 4. Formation of a gas 5. The evolution of heat and light |
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C2H2 + oxygen -> |
combustion |
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sodium + chlorine -> |
synthesis |
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magnesium fluoride -> |
decomposition |
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calcium fluoride + magnesium -> |
single replacement |
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potassium phosphide + aluminum telluride -> |
double replacement |
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what do all synthesis reactions have in common? |
combination into a single product |
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what do all decomposition reactions have in common? |
a single reactant |
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what do single replacement reactions have in common? |
a compound + a single element in both the reactant and product side |
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what do double replacement reactions have in common? |
two compounds in both reactants + products |
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what do all combustion reactions have in common? |
hydrocarbon + oxygen > CO2 + H2O |
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define intermolecular force |
forces of attraction or repulsion which act between neighboring particles |
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list some examples of physical properties |
density, color, hardness, melting/boiling points, electrical conductivity |
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list some examples of physical changes |
wax melting, sugar dissolving, steam condensing into liquid water |
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List some examples of chemical properties |
flammability, toxicity, acidity, reactivity, heat of combustion |
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list some examples of chemical changes |
the formation of rust, food being cooked |
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two ionic compounds "switch partners" and create two different compounds. what kind of reaction? |
double replacement |
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a single reactant is split into two different products |
decomposition |
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a compound that contains hydrogen and carbon is burned in oxygen to produce carbon dioxide and water |
combustion |
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a single element and a compound switch around so that a different single element and a different compound is produced |
single replacement |
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two reactants are combined into a single product |
synthesis |
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Synthesis and decomposition reactions are |
opposites |
