100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Straighterline CHEM101 Final 300+ questions with 100% verified answers CA$26.01   Add to cart

Exam (elaborations)

Straighterline CHEM101 Final 300+ questions with 100% verified answers

 4 views  0 purchase
  • Course
  • CHEM101
  • Institution
  • CHEM101

Straighterline CHEM101 Final 300+ questions with 100% verified answers/Straighterline CHEM101 Final 300+ questions with 100% verified answers/Straighterline CHEM101 Final 300+ questions with 100% verified answers

Preview 3 out of 20  pages

  • September 17, 2024
  • 20
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CHEM101
  • CHEM101
avatar-seller
Straighterline CHEM101 Final
Mass Number - correct answer total number of neutrons and protons in an atom; # protons + #
electrons
p - correct answer Most nonmetallic elements are found in which block of the periodic table?
Positive matter is concentrated in the central core - correct answer Ernest Rutherford
disproved J.J. Thomson's plum-pudding model of the atom by showing that...
Potassium - correct answer Plants use up copious amounts of which alkali metal, preventing
most of it from being washed out to sea?
2:1:1:2 - correct answer What is the ratio of reactants and products in the chemical equation?


__NaOH + __H2SO4 --> __Na2SO4 + __H2O
the number of ATOMS in 12g of Carbon-12
1 g = 6.022 × 1023 amu - correct answer What is Avogadro's number?
Mg - correct answer What is the reducing agent in the following equation?


Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2(g)
(s) < (l) < (g) - correct answer Which arrangement accurately describes the standard entropy
values at different phases?
2, 8, 20, 50, 82 or 126 protons - correct answer What are the most stable isotopes?
S = oxidized
N = reduced - correct answer What element has been oxidized and what element has been
reduced?


3CuS + 8HNO3 --> 3CuSO4 + 8NO + 4H2O
multiply the atomic mass (grams) by the number of moles - correct answer How do you
convert from moles to grams?
Divide the total number of grams by the atomic mass (grams) of 1 mole - correct answer How
do you convert from grams to moles?
Mass - correct answer measure of the amount of matter

,Straighterline CHEM101 Final
Compound - correct answer made from atoms of 2+ elements that are chemically bonded;
cannot be separated into simpler substances by any physical process; can be separated by a
chemical reaction
Solid - correct answer Definite shape and volume
Doesn't conform to shape of container
Particles are very close together in orderly fashion with little freedom of motion
Liquid - correct answer Definite volume, indefinite shape
Conforms to shape of the part of the container it fills
Particles are close together but not rigidly in position with freedom to move past each other
Gas - correct answer No definite shape or volume
Conforms to shape and volume of container
Particles separated by distances very large compared to size of particles
Physical Property - correct answer Color, melting point, boiling point
Observed and measured without changing identity of substance
Chemical Property - correct answer Observed by performing a chemical change
Mixture - correct answer Combination of 2+ elements, each retains its identity and properties
Can be separated by physical means into pure components without changing identity of
compounds
Pure Substance - correct answer fixed composition and differs from a mixture (every sample
has same properties and composition)
Polyatomic Ion - correct answer molecule with a charge
contain more than 1 atom chemically bonded together
ions - correct answer atoms with charge formed by loss or gain of an electron
Cation - correct answer positive ion, may have roman numeral
Anion - correct answer negative ion, element ends in -ide
isotope - correct answer atom of an element that has a different mass because of a different
number of neutrons, but same atomic number
Atomic Number - correct answer total number of protons in an atom; also indicates number of
electrons

, Straighterline CHEM101 Final
Catalyst - correct answer additional reactant that increases the rate of a reaction with a lower
activation energy
Surface area
Concentration
Temperature
Catalyst - correct answer What 4 factors impact the rate of a reaction?
exothermic reaction - correct answer A reaction that RELEASES energy in the form of heat
endothermic reaction - correct answer A reaction that ABSORBS energy in the form of heat
6.022 x 10^23 particles - correct answer How many particles/atoms/molecules are in a mole?
Amount of area exposed for the reaction of a solid - correct answer Surface area impacts rate
of reaction how?
increase the # of reactants in the container, more collisions occur w/enough energy & proper
orientation - correct answer Concentration impacts rate of reaction how?
Higher temperature....more motion....more forceful or higher energy collisions - correct answer
Temperature impacts rate of reaction how?
Boyle's Law - correct answer pressure increases, volume decreases
pV = constant or p1V1 = p2V2
Charles' Law - correct answer Volume goes up, then temperature goes up, pressure remains
the same
V/T = constant or V1/T1 = V2/T2
Avogadro's Law - correct answer volume increases with number increases
v/n
Guy-Lussac's Law - correct answer increase in temperature & increase in pressure
p/T = constant or p1/T1 = p2/T2
Ideal Gas Law - correct answer PV = nRT
when 3 variables are given in an question - correct answer When do you use the Ideal gas law?
- reacting particles must collide
- collisions have proper orientation

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller gradebooster. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$26.01. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

75323 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
CA$26.01
  • (0)
  Add to cart