Biology 1201 Exam 1 Questions and Answers Already Passed
11 views 0 purchase
Course
Biology 1201
Institution
Biology 1201
Biology 1201 Exam 1 Questions and
Answers Already Passed
About 25 of the 92 natural elements are known to be essential to life. Which four of these 25
elements make up approximately 96% of living matter? Carbon, Hydrogen, Nitrogen,
Oxygen
What is the atomic number of an atom that has 6 p...
Biology 1201 Exam 1 Questions and Answers Already Passed About 25 of the 92 natural elements are known to be essen tial to life. Which four of these 25 elements make up approximately 96% of living matter? ✔✔Carbon, Hydrogen, Nitrogen, Oxygen What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons? ✔✔6 Which of these refers to atoms with t he same atomic number but different atomic masses? ✔✔Isotopes Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons does fluorine have? ✔✔10 An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. How many protons does boron have? ✔✔5 Atoms with the same number of protons but with different electrical charges _____. ✔✔Are different ions In salt, what is the nature of the bond between sodium and chlorine? ✔✔Ionic What is the result of the animated process? A bond between Na and Cl form where one electron from Na transfers to Cl ✔✔a positively charged sodium ion and a negatively charged chlorine ion An ionic bond involves _____. ✔✔an attraction between ions of opposite charge What type of bond is joining th e two hydrogen atoms? ✔✔Covalent A(n) _____ refers to two or more atoms held together by covalent bonds. ✔✔molecule This atom can form up to _____ single covalent bond(s). Atom with 4 valence electrons ✔✔4 A(n) _____ bond joins these two oxygen atoms. ✔✔A double covalent bond The brackets are indicating a(n) _____ bond. ✔✔hydrogen bond What name is given to the bond between water molecules? ✔✔hydrogen Which of these figures correctly illustrates the nature of the bonding of H2O? ✔✔ What type of bond joins the carbon atom to each of the hydrogen atoms? ✔✔Single (nonpolar) covalent A substance that cannot be broken down into other substances by ordinary chemical procedures is a(n) _____. ✔✔element Which of the following subatomic particles always has a positive charge? ✔✔proton Changing the number of _____ would change an atom into an atom of a different element. ✔✔protons
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 EFT, 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 this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller StellarScores. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R186,65. You're not tied to anything after your purchase.
