Dimensional Analysis and Significant Figures
Isotopes and Ions
Miscellaneous
Theory & Laws
Matter and its Properties
100
How many significant figures are in the measurement, 463.090 m?
6 significant figures
100

What is the Isotopic Symbol for Arsenic with 35 neutrons?

X = element symbol = As

A = mass number = 68

Z = atomic number = 33

100

What is the relationship between density, mass, and volume

m=d x v

d=m/v

v=m/d

100
The statement, "In a chemical reaction, matter is neither created nor destroyed" is called
the Law of Conservation of Mass
100
Define matter.
Matter is anything that occupies space and has mass.
200
How many kL does a 8.55 × 10^8 cL sample contain?
8.55 × 10^3 kL
200
Describe the difference between ions and isotopes.
Ions have the loss or gain of electrons; isotopes differ in the number of neutrons.
200

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g/mL.

866 g

200
Define the law of the conservation of energy.
Energy is neither created or destroyed.
200
Two or more substances in variable proportions, where the composition is variable throughout are
a heterogeneous mixture.
300
What answer should be reported, with the correct number of significant figures, for the following calculation? (249.362 + 41) / 63.498?
4.57
300
What is the identity of element Q if the ion Q2+ contains 10 electrons?
Mg
300
The outside temperature is 35°C, what is the temperature in K?
308 K
300

Describe what an atom looks like in terms on protons neutrons and electrons. (Describe Atomic Theory)

Elements are composed of indestructible particles called atoms. Electron field moving around in empty space making up most of size. Nucleus has protons and neutrons making up almost all of mass of atom. 

300
What type of change occurs when iron rusts?
Chemical Change
400
Calculate the mass (in ng) of 2.33 x 10^20 atoms of oxygen.
6.19 x 10^6 ng
400
Calculate the atomic mass of gallium if gallium has 2 naturally occurring isotopes with the following masses and natural abundances: Ga-69 68.9256 amu 60.11% Ga-71 70.9247 amu 39.89%
69.72 amu
400

If there is 1 gram pf Phosphite how many Mg, Gg, Tg, Pg, and Eg are there?

Mg = 10^-6

Gg = 10^-9

Tg = 10^-12

Pg = 10^-15

Eg = 10^-18

400
Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C. This statement is an example of what law?
The Law of Multiple Proportions
400
What type of property is "Hydrogen is less dense than air"?
Physical Property
500
The recommended adult dose of Elixophyllin , a drug used to treat asthma, is 6.00 mg/kg of body mass. Calculate the dose in milligrams for a 115-lb person. 1 lb = 453.59 g.
313
500
An ion has 8 protons, 9 neutrons, and 10 electrons. What is the symbol for the ion?
17 O 2-
500

If there is 1 gram of Chlorine. How many ag, fg, pg, and dg are there?

ag = 10^18

fg = 10^15

pg = 10^12

dg = 10^1 or 100

500
All samples of a given compound, regardless of their source or how they were prepared, have the same proportions of their constituent elements. Which law does this refer to?
Law of Definite Proportions
500
What type of property is "Hydrogen reacts explosively with oxygen"?
Chemical Property
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