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100
Where are nonmetals located in the periodic table?
to the right of the zigzag line
100
The symbol for an ion of Beryllium is..?
Be +2
100
In a double bond, how many electrons are shared?
4
100
What were the names of the 2 crystals we looked at yesterday?
Halite and Quartz
100
How many valence electrons does Carbon have?
4
200
A block of metal has a length of 3 centimeters, a width of 5 centimeters, a height of 10 cm and a mass of 3,000 grams. Find the density of the metal
20 g/cm3
200
___________ ions are composed of more than 1 atom. Give an example.
Polyatomic.
200
Which molecule is held together by a covalent bond? a) Cl2 b) MgO c) NaCl d) CaO
a) Cl2
200
What causes the mineral Halite to break apart along flat surfaces?
alternating positive and negative ions
200
Name the following molecular compounds? a) C12H22O11 b) CH4
a) sugar b) methane
300
How do crystalline and amorphous solids differ?
Crystalline solids have a regular pattern of particles but amorphous do not.
300
Which of the following conducts electricity? a) sugar crystals b) salt cyrstals c) sugar dissolved in water d) salt dissolved in water
d) salt dissolved in water
300
Atoms in _______ covalent bonds cary slightly electrical charges.
polar
300
Sand is made up of which mineral? What knd of bonds does it have? Which elements made it up.
Quartz, covalent, SO2
300
Draw the bonds that form between two Nitrogen molecules. What type of bond is this?
nonpolar triple covalent
400
Dalton's atomic theory contains all of the following ideas except: a) atoms of two or more elements can combine to form compounds b) in any element, the atoms are exactly alike c) atoms of each element have a unique mass d) atoms are made of protons, neutrons, and electrons
d) atoms are made of protons, neutrons, and electrons
400
Write the formula for each of the following compounds: a) sodium fluoride b) aluminum sulfide c) boron chloride
NaF Al2S3 BCl3
400
Name 2 properties of molecular compounds
low boiling point, not usually crystal structure, poor conductors of electricity
400
What determines the properties of minerals?
The arrangement of particles and the types of bonds holding them together
500
What two groups of elemements are located below the periodic table?
The lanthanides and the actinides
500
Name the following ionic compounds: a) AlPO4 b)Li2O c) Mgs
aluminum phosphate Lithium Oxide Magnesium Sulfide
500
Give an example of a nonpolar covalent bond. Draw
CO2
500
Which property of a mineral can be determined by scratching it?
hardness