Chemistry Flashcards
What is the freezing point of water in degrees C, F, K?
0 Celsius, 32 Fahrenheit, 273 kelvin
How does a meter compare to a yard?
There are 3 ft in a yard and a yard is about 3 inches shorter than a meter.
A kilogram is approximately how many pounds?
2.2
A liter is equivalent to how many quarts?
About one
What is the breakdown of a gallon?
1gallon
4quarts
8pints
16cups
What is the boiling point of water in degrees Celsius, Fahrenheit, and kelvin?
212 F
100 C
373K
What does the atomic number represent?
Number of protons
What does the atomic mass represent?
Number of protons+neutrons
What are alloys?
Solid solution of metals to create a new one, such as bronze
What are amalgams?
A specific type of alloy in which another metal is dissolved in mercury
What are emulsions?
Mixtures of matter that readily separate such as water and oil.
What is Avogadro’s number and what does it represent?
One mole of a substance = 6.02 x 10 ^23
What are four ways to increase reaction rate?
Increase temperature
Increase surface area of the reactants
Increase concentration of the reactants
Add a catalyst
What are the five main types of chemical reactions?
Synthesis Decomposition Combustion Single replacement Double replacement
What are the products of a combustion reaction?
CO2 and H2O
What is a single replacement reaction?
A reaction that consists of a more active metal reacting with an ionic compound containing a less active metal to produce a new compound.
What is a double replacement reaction?
A reaction involving two ionic compounds. The positive ion from one compound combines with the negative ion of another compound to form entirely new compounds.
What are the two main types of chemical bonds?
Ionic and covalent
What is an ionic bond?
A electrostatic bond formed between two ions, usually a metal and nonmetal
What is a covalent bond?
Sharing of paired electrons that usually occurs between nonmetals. The strongest chemical bond.
What are three types of intermolecular forces?
Hydrogen bonds, dipole-dipole interactions, dispersion forces.
Alpha radiation can be blocked by…
A piece of paper
Beta radiation can be blocked by…
A thin sheet of aluminum, lucite, or plastic
Gamma radiation can be blocked by…
Lead shielding
