Ask a New Question
Menu

Question 20

Which of the following particles cannot be changed without changing the identity of the element?

a. neutron
b. electron
c. proton
d. neutrino particle
Question 21
Atoms of the same element with differing numbers of neutrons are called:

a. ions
b. elements
c. compounds
d. isotopes
Watch the following video on valence electrons and answer the corresponding questions.

Question 22
You can find the number of valence electrons by identifying which period it is in.
True False
Question 23
How many valence electrons would an element in group 17 on the periodic table have?

a. 1
b. this information cannot be found from the information provided
c. 7
d. 17
Question 24
Match the trend on the periodic table to its description

Column A
1.a measure of how strongly atoms attract bonding electrons to themselves:
2.the amount of energy required to remove an electron from an atom or molecule:
3.a measure of the size of an atom
Column B
a. electronegativity
b. ionization energy
c. atomic radius
Question 25
Match the type of bond to its description.

Question 25
Match the type of bond to its description.

Column A
1.a bond between a metal and a nonmetal:
2.electrons are transferred:
3.electrons are shared:
4.a bond between two nonmetals:
5.NaCl:
6.CO2
7.highly conductive when dissolved in water:
8.not conductive or not very conductive when dissolved in water:
Column B
a. covalent
b. ionic

1 answer

Here are the answers to your questions:

Question 20 Which of the following particles cannot be changed without changing the identity of the element?

  • c. proton

Question 21 Atoms of the same element with differing numbers of neutrons are called:

  • d. isotopes

Question 22 You can find the number of valence electrons by identifying which period it is in.

  • False (Valence electrons are determined by the group number, not the period.)

Question 23 How many valence electrons would an element in group 17 on the periodic table have?

  • c. 7

Question 24 Match the trend on the periodic table to its description:

  1. a measure of how strongly atoms attract bonding electrons to themselves:
  • a. electronegativity
  1. the amount of energy required to remove an electron from an atom or molecule:
  • b. ionization energy
  1. a measure of the size of an atom:
  • c. atomic radius

Question 25 Match the type of bond to its description:

  1. a bond between a metal and a nonmetal:
  • b. ionic
  1. electrons are transferred:
  • b. ionic
  1. electrons are shared:
  • a. covalent
  1. a bond between two nonmetals:
  • a. covalent
  1. NaCl:
  • b. ionic
  1. CO2:
  • a. covalent
  1. highly conductive when dissolved in water:
  • b. ionic
  1. not conductive or not very conductive when dissolved in water:
  • a. covalent

If you have any further questions, feel free to ask!