WorksheetsAtoms, Bonding and Water
Total questions: 34
Worksheet time: 26mins
Name
Class
Date
1.
What 3 subatomic particles make up atoms?
a)
Isotopes, protons, covalent bonds
b)
quarks, quirks, compounds
c)
protons, neutrons, isotopes
d)
protons, neutrons, electrons
2.
A chemical ________ is a pure substance made entirely of 1 type of atom.
a)
element
b)
compound
c)
mixture
d)
blend
3.
The nucleus of an atom usually contains:
a)
protons and neutrons
b)
electrons
c)
electrons and protons
d)
isotopes
4.
The main types of chemical bonds are:
a)
ionic and subliminal
b)
covalent and hydrogenated
c)
ionic and covalent
d)
ionic and flourite
5.
A slight attraction between oppositely charged regions of nearby molecules are called:
a)
Van Der Waals forces
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
6.
The electrons involved in chemical bonds are called ___________ electrons.
a)
valence
b)
ionic
c)
Van Der Waals
d)
covalent
7.
Water helps living things by:
a)
regulating temperature change
b)
serving as a buffer
c)
acting as a reactant in photosythesis
d)
all choices are correct
8.
What is the smallest unit of matter that cannot be broken down by chemical means?
a)
Atom
b)
Element
c)
Ion
d)
Isotope
9.
A negatively charged particle moving around the nucleus of an atom
a)
neutron
b)
proton
c)
electron
d)
ion
10.
What particle is found in the nucleus and has no charge?
a)
electron
b)
neutron
c)
proton
d)
atom
11.
An atom becomes negatively charged by
a)
gaining an electron
b)
losing an electron
c)
losing a proton
gaining a neutron
gaining a neutron
12.
The space surrounding the nucleus of an atom contains
a)
protons
b)
electrons
c)
neutrons
d)
ions
13.
Number of protons that an atom has
a)
Atomic symbol
b)
Atomic Number
c)
Atomic Mass
d)
Mass Number
14.
Attractions between the negative end of one water molecule and the positive end of a different water molecule are called
a)
Covalent bonds
b)
Ionic bonds
c)
Polar bonds
d)
Hydrogen bonds
15.
Why does ice float?
a)
As water freezes, it expands and its density decreases.
b)
As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
c)
As water freezes, more hydrogen bonds form, making ice float
d)
As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
16.
Which end of the water molecule has a slightly positive charge?
a)
the oxygen end
b)
the hydrogen end
c)
both ends are slightly positive
d)
neither end is positive
17.
Water is polar because...
a)
The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
b)
The molecule has two poles, at which the it is colder than other regions of the molecule.
c)
The unequal sharing of electrons gives the water molecule a slight negative charge near its hydrogen atoms and a slight positive charge near its oxygen atom.
d)
The water molecule is neutral.
18.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
19.
A water strider can skate along the top of a pond because:
a)
covalent bonds result in water cohesion
b)
hydrogen bonds result in water cohesion (surface tension)
c)
water striders have special powers
d)
low surface tension of water
20.
Water is polar and oil is nonpolar.
a)
True
b)
False
21.
Which of the following makes up a molecule of water?
a)
one atom of hydrogen and one atom of oxygen
b)
one atom of sodium and one atom of chlorine
c)
one atom of hydrogen and two atoms of oxygen
d)
two atoms of hydrogen and one atom of oxygen
22.
What type of ion forms when an atom loses electrons?
a)
neutral
b)
negative
c)
positive
d)
possibly positive or negative
23.
When salt is dissolved in water, water is the
a)
reactant.
b)
solution.
c)
solute.
d)
solvent.
24.
A substance with a pH of 6 is called
a)
an acid.
b)
a base.
c)
both an acid and a base.
d)
neither an acid nor a base.
25.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
26.
What is the element symbol for CARBON?
a)
C
b)
Ca
c)
Cl
d)
Cu
27.
A chemical bond formed when 2 atoms share electrons
a)
ionic bond
b)
covalent bond
c)
ionic compound
d)
soap
28.
A compound that consists of positive and negative ions
a)
proton
b)
ionic bond
c)
density (D)
d)
ionic compound
29.
Small positively charged particles that are found in the nucleus of an atom
a)
neutron
b)
ion
c)
proton
d)
electron
30.
A tiny, negatively charged particle that moves around the outside of the nucleus of an atom
a)
ion
b)
proton
c)
electron
d)
neutron
31.
All matter is made of what?
a)
energy
b)
atoms
c)
electrons
d)
compounds
32.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons
c)
The transfer of electrons
d)
None Of the above
33.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
34.
Two or more atoms chemically joined are called...
a)
atoms
b)
ionics
c)
covalents
d)
compounds
100 %
