Please help ..................... Chemistry????
I'm looking over a study guide for a chemistry test tomorrow and I don't understand these questions....please help me?
1. Which of the following does Coulomb's law state?
A. An ionic bond will halve in strength if the charge of one of the ions doubles.
B. An ionic bond will double in strength if the charge of one of the ions doubles.
C. There will be no change in ionic bond strength as the charges of the ions are changed.
D. Ionic compounds tend to be crystalline.
2. What is the difference between a crystalline solid and an amorphous solid?
A. An amorphous solid has a high degree of order at the atomic level, whereas a crystalline solid does not.
B. In a crystalline solid, like-charged atoms touch one another, but in an amorphous solid they do not.
C. A crystalline solid has a high degree of order at the atomic level, whereas an amorphous solid does not.
D. An amorphous solid can undergo cleavage, whereas a crystalline solid cannot.
3. Which statement(s) is/are true regarding chemical (ionic and covalent) bonds?
Check all that apply.
A. It always takes energy to break a chemical bond.
B. Energy is absorbed when a chemical bond is formed.
C. Energy is always released when a chemical bond forms.
D. Energy is always released when a chemical bond is broken.
4. Which statement is correct regarding helium?
A. It forms covalent bonds with itself to satisfy the octet rule.
B. It refuses to form covalent bonds with itself because its duet is already satisfied.
C. It is monoatomic because it has no valence electrons.
D. It exists as diatomic molecules, just like and .
5. Under what conditions should it be expected that a multiple bond between atoms in a molecule will form?
A. A nonmetal atom is involved.
B. All of the valence electrons have been used in drawing a dot diagram, and one or more of the atoms still has less than an octet.
C. A group IVA element is involved.
D. A molecule needs bonds that are stronger than single bonds.
- TeenLv 67 years agoFavorite Answer
Coulomb's law: F =kq1q2/r^2
If the charge of one ion doubles then F is doubled.
3) A and C