Exam (elaborations)
CHM1025 Final Exam Review- 116 Questions with Answers
CHM1025 Final Exam Review- 116 Questions with Answers
[Show more]
Content preview
CHM1025 Final Exam Review- 116 Questionswith Answers
Chemistry - -The study of composition, structure, properties, and reactions
of matter
-Matter - -Any material that has mass and occupies space
-Chemical - -Any substance (matter) that has specific composition obtained
by or used in chemical reactions
-Branches of Chemistry - -organic chemistry, inorganic chemistry,
biochemistry, analytical chemistry, physical chemistry
-Scientific method - -The process used by scientists to explain observations
in nature.
-Steps in scientific method - -observation, hypothesis, experiments, theory
-Measuring tool or device - -used to compare some dimension of an object
to a standard.
-Types of measurement - -length, volume, mass, time, temperature.
-Length - -measured using a meter stick, has a unit of meter (m) in the
metric and SI systems. For small measurements in chemistry, use
centimeters (cm)
-Volume - -the space occupied by a substance, has a unit liter (L) in metric
system and cubic meter in the SI system. Use mL for small measurements in
chemistry.
-Mass - -The quantity or amount of material it contains. It is measured using
a balance, has a unit gram (g) in the metric system and kilogram (kg) in the
SI system.
-Weight - -Measure of gravitational pull on an object.
-Temperature - -Indicates how hot or cold an object is. It is measured in
celsius in metric system. The SI system uses Kelvin (K) scale.
-Time - -Has a unit second(s) in both the metric and SI system.
-Prefixes - -They are used in front of a base unit to increase or decrease the
size of that unit by a factor of 10.
, -Equalities - -State the same measurement in two different units.
-Exact Numbers - -Numbers obtained by counting objects e.g. 2 soccer balls
Numbers in definition (equalities that compare two units in the same unit
system) e.g. 1 foot = 12 inches
-Measured Numbers - -The measurements obtained using measuring
devices
Numbers inequalities that compare different unit systems example: 1L =
1.057qt
exception: 1in=2.54cm (this is exact)
-Significant figures - -The digits in a measurement. All certain and
estimated digits in a measurement are ci=ounted as significant figures
-A measure number - -consists of certain digits and an estimated digit. Last
number in a measurement is estimated.
-500 - -1 significant figure
-500. - -3 significant figures
-Significant figures - -Multiplication and Division
-Decimal Place - -Addition and Subtraction
-Scientific notation - -A number written in scientific notation contains a
coefficient and a power of 10
-Unit Conversion: Dimensional Analysis - -Given:
Needed:
Conversion Factor:
-Density - -ration between the mass of an object and its volume.
D = mass (g) divided by volume (mL)
1mL=1cm3 (cubic cemtimeter)
-Density of solids - -The volume of the solid is equal to the volume of
difference of the liquid.
-Matter - -Can be solid, liquid or gas---called physical state. water is found
commonly in all three states.
-Pure substances - -they are type of matter with definite or fixed
composition. Two types of pure substances: Element and Compunds
The benefits of buying summaries with Stuvia:
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
You can quickly pay through credit card for the summaries. There is no membership needed.
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 Victorious23. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £9.66. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73314 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now