Worksheets[CHEMISTRY GRADE 10] - CHEMICAL BONDING.
Total questions: 12
Worksheet time: 6mins
The correct formula for a copper atom that has lost two electrons is
Co+ .
Co2+ .
Cu2− .
Cu2+ .
Which of the following is not a characteristic of a salt?
hardness.
a high melting point.
an ability to conduct electric current in the molten state.
an ability to conduct electric current in the solid state.
The correct formula for ammonium phosphate is
(NH4)3PO4
(NH4)2PO4.
NH4PO4.
NH4(PO4)2.
Element X and Y react to form compound Z. Element X loses 1 electron and element Y gains 2 electrons. A student writes three statements about the reaction:
(1) Z is an ionic compound.
(2) The formula of Z is X2Y.
(3) The charge on the ion of element Y is 2+.
Which statements are correct?
(2) and (3).
(1) and (2).
(1), (2) and (3).
(1) and (3).
How many valence electrons are indicated by the following electron configuration?
1s22s22p63s23p5
2.
5.
3.
7.
Metals tend to lose one or more electrons to form
cations.
anions.
polyatomic ions.
unit cells.
A polar covalent bond is likely to form between two atoms that
differ in electronegativity.
are of similar size.
differ in state of matter.
have the same number of electrons..
The Lewis structure of methane, CH4, has
two double bonds.
one triple bond.
four single bonds.
two single bonds and two double bonds
The series of substances containing nonpolar covalent bonds is
Cl2, O3, H2O.
K2O, Cl2, O3.
O2, O3, H2O.
O3, O2, H2.
Which statement about ion and ionic bonds is correct?
Bromine atoms form negatively charged bromide ions.
Positive ions are formed when atom lose protons.
Sodium ions have an equal number of protons and electrons.
Ionic bonding involves sharing of pairs of electrons.
Which of the following compounds forms hydrogen bonds?
CH4.
H2O.
PH3.
H2S.
Which of the following orders represents decreasing strength of bond types?
Ionic bonds > covalent bonds > hydrogen bonds > van der Waals force.
Ionic bonds > covalent bonds > van der Waals force > hydrogen bonds.
Covalent bonds > ionic bonds > hydrogen bonds > van der Waals force.
van der Waals force > hydrogen bonds > covalent bonds > ionic bonds.
