Chapter 1
The definition of matter.
What is anything that has mass and occupies space?
The number of significant figures in the number 000893.653409.
What is 7 significant figures?
The state of matter of a substance that has a definite volume but indefinite shape?
What is a liquid?
The theory that each element is composed of tiny indestructible particles called atoms.
What is Dalton's atomic theory?
(4+207.562+115.75) g/1034 mL=
What is 0.317 g/mL
PEMDAS (do parentheses first)
Then, add then up by lining them up = 327.313
Go to the least precise, which is the ones place (because of the 4), then you note that 327 is 3 s.f.Then, do the whole problem, dividing by 1034 mL and get 0.316549323. Even though 1034 mL is 4 s.f., we use 3s.f. from the addition portion because it is the least significant figures we use and get 0.317 g/mL.
Final answer: 0.317 g/mL
The symbol for the element Argon.
What is Ar?
The scientific notation of the number 30.01
What is 3.001 x 101?
The classification of the substance concrete.
What is a heterogeneous mixture?
The number of electrons in the element Silicon if it has 14 protons?
What is 14 electrons?
Convert to scientific notation (I will hand out two white boards and two pairs of two people will race to solve)
a) 800.01
b) 30.01
Convert to decimal notation
c)1.5147* 10^-5
d) 8.3545* 10^6
a) 8.0001* 10^2
b) 3.001 +10^1
c) 0.000015147
d) 8,354,500
The study of carbon-containing substances.
What is Organic Chemistry?
The number of kilometers ran a day if Elizabeth runs 4587 miles a year. (1 mi = 1.61 km)
What is 20.23 kilometers per year?
The Law of Conservation of Mass.
What is matter is neither created nor destroyed in a chemical reaction?
The classification of the element Magnesium.
What is alkaline earth metal?
The charge and formula of a Thiosulfate ion.
What is S2O3-3
The decimal place to which you can report an instrument with 1 cm tickmarks?
What is to the thousandth's place (.001)?
Herbert is making a birdhouse for his bird Fernando. The walls of his birdhouse have an area of 35.7 in2. There 5 walls total in his birdhouse. If one tube of paint covers 13.89 cm2, how many tubes of paint does Herbert need to cover his birdhouse?
What is 82.90 tubes of paint?
The grams of Potassium Carbonate (K2CO3) in the following reaction.
KOH + CO2 -> K2CO3 + H20
(224.4g) (88.0g) (?). (36.0g)
What is 276.4 grams of K2CO3?
The number of neutrons if Carbon has a mass of 14.
What is 8 neutrons?
Conversion problem:
What is 14.5 m^2?
ft^2 -------------->yd^2------------> m^2
(1yd/3ft)^2 (0.914m/1yd)^2
156 ft^2 * (1yd)^2/(3ft)^2 * (0.914m)^2/ (1yd)^2 = 14.48019733 m^2 = 14.5 m^2
The steps of the scientific method.
What is
The mass of a magnesium string (in mg) with a volume of 57.563cm3.
Given that the density of magnesium is 1.738g/cm3
What is 100.10 grams?
The conversion in Celsius of 543.87 degrees Fahrenheit.
What is 284.372222?
Name and locate the different groups on the periodic table.
What is Alkali Metals, Alkaline Earth Metals, Transition Metals, and Noble Gasses?
Two- step dimensional anaylisis:
Kate raises chickens for eggs while Sam plants peaches, 5.70 pounds of peaches can be exchanged with 2 dozen eggs. If Kate has 170 eggs to exchange with Sam, how many pounds of peaches will she get?
Find: pounds of peaches
Solution map:
eggs- dozen eggs-pounds of peaches
170 eggs* 1 dozen/12 eggs * 5.70 pounds of peaches/ 2 dozen eggs = 40.375 pounds of peaches
The least number of sig figs if (2 from 2 dozen eggs) which makes it 40. pounds of peaches or 4.0 * 10^1 pounds of peaches