College PREP General Chemistry- Chapter 1 & 2 Review | Latest Version | 2024/2025 | 100% Verified
9 views 0 purchase
Course
College PREP General Chemistry
Institution
College PREP General Chemistry
College PREP General Chemistry-
Chapter 1 & 2 Review | Latest Version |
2024/2025 | 100% Verified
What is the difference between a pure substance and a mixture, and how can they be separated?
A pure substance has a consistent composition and properties throughout, consisting of only
one t...
College PREP General Chemistry-
Chapter 1 & 2 Review | Latest Version |
2024/2025 | 100% Verified
What is the difference between a pure substance and a mixture, and how can they be separated?
✔✔ A pure substance has a consistent composition and properties throughout, consisting of only
one type of element or compound, while a mixture contains two or more substances that retain
their individual properties and can be separated by physical means like filtration or distillation.
How do you define the law of conservation of mass, and why is it fundamental in chemical
reactions?
✔✔ The law of conservation of mass states that mass is neither created nor destroyed in a
chemical reaction, meaning the total mass of reactants equals the total mass of products, which is
fundamental for balancing chemical equations.
What are the key differences between physical properties and chemical properties of matter?
✔✔ Physical properties can be observed or measured without changing the composition of the
substance, such as density or melting point, while chemical properties describe a substance's
ability to undergo a chemical change, such as flammability or reactivity.
1
, What is the concept of an element, and how does it differ from a compound?
✔✔ An element is a pure substance that consists of only one type of atom, while a compound is
a substance formed from two or more elements that are chemically bonded together in fixed
proportions.
How do you determine the number of significant figures in a measurement, and why are they
important in scientific calculations?
✔✔ Significant figures reflect the precision of a measurement by including all known digits plus
one estimated digit, and they are important in scientific calculations to ensure that the results are
not overrepresented in terms of accuracy.
What are the characteristics of a homogeneous mixture compared to a heterogeneous mixture?
✔✔ A homogeneous mixture has a uniform composition throughout, such as salt dissolved in
water, while a heterogeneous mixture has visibly different components or phases, such as oil and
water.
How does the concept of density relate to mass and volume, and how can it be used to identify a
substance?
✔✔ Density is defined as mass per unit volume and can be used to identify a substance because
each substance has a characteristic density under specific conditions.
2
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 or Stuvia-credit 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 SterlingScores. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.83. You're not tied to anything after your purchase.
