BSC 1010 Study Guide - Final Guide: Mass Number, Electron Shell, Dehydration Reaction

1-which elements have only one electron shell

-hellium

-carbon

2-carbon12 and carbon 13, are two examples carbon ions. theyhave the same number of ... but different numbers of ....

3- in an ionic bond ... is positive

-the anion

-the cation

4- a hydrogen bond is an example of ...

-van der Waals force

-a non-polar bond

5- basic ph is maintained in which of the following

-gastric " juices"

-ammonia solutions

6- argon has one or more than one electron shell and theoutermost shell contains eight electrons, what are the outcome ofsuch electron configuration ?

i-ts stable and inert

-it forms covalent bonds in an equeous solution

ATOMIC STRUCTURE

1. A neutral oxygen atom (atomic number = 8) has 8 electronslocated in 2 different electron orbitals. TrueFalse

2. Hydrogen has only one neutron and no protons in itsnucleus. TrueFalse
3. An atom consists of a central nucleus surrounded by electronsthat are in constant motion. TrueFalse
4. Almost all of the mass of an atom is concentrated in itselectrons. TrueFalse
5. The orbital of an electron is the volume of space where theelectron is most likely to be found. TrueFalse
6. Almost all of the volume of an atom is emptyspace. TrueFalse
7. The reactivity or chemical behavior of an atom depends primarilyon the number of neutrons it has. TrueFalse
8. Modern physics indicates that we cannot determine the exactlocation of a particular electron at any giventime. TrueFalse
9. Electrons are maintained in their orbitals by their attractionto the positively charged nucleus. TrueFalse
10. Atomic orbitals represent probability distributions forelectrons and come in a variety of shapes. TrueFalse

1.An ionic bond is created by ? a)a positive and negative ion attracting eachother b)two or more positive ions combining c)two or more negative ions combining d)none of the above

2.A transfer of electrons from one atom to another occurs? a)in all chemical reactions b)in the formation of all chemical bonds c)in the formation of covalent bonds d)none of the above

3.When cucrose is mixed with water and the proper enzyme , the sucrose molecule splits into glucose and fructose the reaction is an example of? a)hydrolysis b)dehydration c)synthesis d)anabolism

4.Which of the following compounds is an organic acid ? a)H2CO3 b)NaOH c)HCl d)KCL

5.Which of the following is a protein ? a )sucrose b)cholesterol c)Raffinose d)Mannose

6.In the formation of polymer dehydration synthesis occurs between ? a)the amino groups of 2 different amino acids b)the acid groups of two different amino acids c) the amono group of one amino acid and the acid group of the other d)none of the above

7.Which of the following is protein? a)surcase b)cholesterol c )raffinose d)mannose

8.The combination of glucose and galactose forms ? a)fructose b)maltose c)lactose d)Surose