Homework Help: physical science

Posted by Amy on Monday, November 17, 2008 at 6:17pm.

plse make sure these are correct

1.When an atom loses an electron is..
a. becomes a negative ion.
b. becomes a positive ion.
c. forms a covalent bond.
d. gains protons

is the answer D

2.Which of these is a property of an ionic compound?

a. low melting point
b. poor conductor of electricity
c. crystal shape
d. shared electrons

is the answer B

3. A bond in which a pair of electrons is shared between two atoms.

a. ionic
b. covalent
c. polyatomic
d. triple

is the answer A

4. Fluorine atoms cannot form a doubel or triple bond because fluorine...

a. is a nonmetal
b. strongly attracts electrons
c. has 7 valance electrons
d. is a gas at room tempiture

is the answer D

5. An ionic crystal splits along a face of
a. like charges
b. molecules
c. unlike charges
d. random ions

plse help me and thx

physical science - marcie, Monday, November 17, 2008 at 6:24pm
1. b
3. b

not sure about the others though.
physical science - DrBob222, Monday, November 17, 2008 at 6:27pm
I don't believe any of the original answers are correct.
- physical science - DrBob222, Monday, November 17, 2008 at 6:29pm
  Marcie has the correct answer for 1 and 3.
physical science - marcie, Monday, November 17, 2008 at 6:31pm
im pretty sure 2 is d.
physical science - Amy, Monday, November 17, 2008 at 6:35pm
thx i am like having trouble with this chapter becuase are teacher asigned it and like we didnt really go over the chapter do you happen to know 4 and 5
- physical science - marcie, Monday, November 17, 2008 at 6:38pm
  no sorry...we are doing the same thing in science and we take the test over it tom...we never talked about those things from 4 and 5....i dont really get it either.
physical science - Amy, Monday, November 17, 2008 at 6:45pm
thx any ways and good luck on your test;)
- physical science - marcie, Monday, November 17, 2008 at 6:53pm
  thanks...hope you get your other answers
physical science - DrBob222, Monday, November 17, 2008 at 8:09pm
Ionic compounds are formed when a metal loses an electron to a non-metal, which gains the electrons.
Covalent compounds are formed, on the other hand, when electrons are shared between atoms.
physical science - denise, Wednesday, January 21, 2009 at 11:57am
atoms gain or lose electrons to achieve what?
physical science - Ana, Sunday, May 31, 2009 at 5:14pm
1 is b
physical science - Eliza, Tuesday, October 27, 2009 at 9:59pm
My science book is exactly the same. this is what I put:

1.b
2.c
3.b
4.d
5.?

I'm not sure if I am right on some of those, and I'm still looking for the answer for number 5. Hope this helped!
physical science - bloopers!!!!!, Wednesday, January 20, 2010 at 9:23pm
i need number 5 too!!!! im doin the same stuff for hw now
physical science - desirae, Friday, October 29, 2010 at 10:17pm
what is the factors of quantity and quality of water?
physical science - Hello, Tuesday, March 1, 2011 at 9:50pm
when an atom loses an electron it becomes a positive ion

A property of an ionic compound is crystal shape

A bond in which a pair of electrons is shared between two atoms is a covalent bond

Fluorine atoms cannot form a doubel or triple bond because fluorine has 7 valence electrons

An ionic crystal splits along a face of like charges

im pretty sure these are all right
i had the same questions for homework but i didnt hand it in yet so i dont know if they're all correct

1. B
2. C
3. B
4. C
5. A

hope this helps :)

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