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Formula to find temperature in Kelvin.
T in Kelvin = T in Celsius + 273
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Formula to find temperature in Celsius.
T in Celsius = T in Kelvin - 273
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Formula to find temperature in Fahrenheit.
T in Fahrenheit = 1.80(T in Celsius) + 32
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Formula to find temperature in Celsius.
T in Celsius = Temperature in fahrenheit -32 divided by 1.80
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Density formula
Mass divided by volume.
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Formula to find specific heat.
Specific heat = Energy required divided by m x change in temperature
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List the six diatomic elements.
H N O F Cl Br (Subscripted 2)
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Major points of Dalton's Atomic Theory
- 1. Elements are made of tiny particles calle atoms.
- 2. All atoms of a given element are identical.
- 3. The atoms of a given element are different from those of any other element.
- 4. Atoms of an element can combine with atoms of other elements to create compounds. A compound always has the same relative numbers and types of atoms.
- 5. Atoms are indivisiible in chemical processes. That is, atoms are not created or destroyed in chemical reactions. A chemical reaction simply changes the way atoms are grouped together.
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Convert between standard (decimal) notation and scientific notation (both directions).
positive <---- . ----> negative
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Count significant figures.
- Use the equivalence statement.
- Decide direction of change.
- Solve equation.
- Siggie Figgies.
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Use dimensional analysis to convert between English and metric, given conversion factors.
Use the equivalence statement.Decide direction of change.Solve equation.Siggie Figgies.
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Perform calculations (+,-,x, div), and express your result with the proper number of significant digits.
The number of siggie figgies are limited to the least precise number's amount of sig figs.
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How to identify physical and chemical changes. (Differences.)
A physical change does not change the chemical composition; a chemical change does.
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Determine the number of protons, neutrons, and electrons contained in various atoms and ions.
- Atomic number = the number of protons.
- The number of electrons = the number of protons.
- The mass number = the number of protons and neutrons.
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List the four clues (evidences) that a chemical reactions has occurred.
Color change, gas, temperature change, and formation of a precipitate.
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Avogadro's number.
6.022x10(23)
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Define precipitation.
The process that forms a precipitate.
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Define insoluble.
A solid where such a tiny amount dissolves in water that it is undetectable with the naked eye.
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Define molecular equation.
The equation that shows the complete formulas of all reactants and products.
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Define complete ionic equation.
The equation that represents the actual forms of the reactants and products. All substances that are strong electrolytes are represented as ions.
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Define net ionic equation.
The equation that included only those components that are involved in the reactions. (Removed spectators.)
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Define acid.
A substance that produces H+ ions (protons) when it is dissolved in water.
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Define base.
A substance that produces hydroxide ions (OH-) in water.
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Define neutralization.
Acid-base reactions.
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Define salt.
The product of an strong acid and strong base reaction.
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Define oxidation-reduction.
A reaction that involves a transfer of electrons.
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Define complete combustion.
A chemical reaction that involves oxygen producing energery (heat) so rapidly that a flame results.
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Define atomic mass unit.
1.66x10(-24)
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Define molar mass.
The mass (in grams) of 1 mol of the substance.
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Define empirical formula.
A formula that represents the simpliest ratio of atoms in a compound.
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Define molecular formula.
The formula that gives the composition of molecules present.
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Define solubility.
A solid's ability to dissolve in water.
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