WorksheetsBio 2.1 Matter
Total questions: 16
Worksheet time: 8mins
Name
Class
Date
1.
basic unit of matter
a)
element
b)
ion
c)
isotope
d)
molecule
e)
atom
2.
unable to be cut
a)
nucleus
b)
atomos
c)
neutron
d)
proton
e)
electron
3.
positively charged particle
a)
nucleus
b)
atomos
c)
neutron
d)
proton
e)
electron
4.
particle with no charge
a)
nucleus
b)
atomos
c)
neutron
d)
proton
e)
electron
5.
atom-core made of protons and neutrons
a)
nucleus
b)
atomos
c)
neutron
d)
proton
e)
electron
6.
negatively charged particle
a)
nucleus
b)
atomos
c)
neutron
d)
proton
e)
electron
7.
pure substance that consists entirely of one type of atom
a)
element
b)
ion
c)
isotope
d)
molecule
e)
atom
8.
atoms of the same element that have different numbers of neutrons
a)
element
b)
ion
c)
isotope
d)
molecule
e)
atom
9.
process in which unstable nuclei lose energy by emitting radiation
a)
van der Waals forces
b)
compound
c)
radioactive
10.
a substance composed of two or more elements
a)
van der Waals forces
b)
compound
c)
radioactive
11.
electrons in the outermost shell available to form bonds
a)
ionic bond
b)
valence electrons
c)
covalent bond
12.
formed when one or more electrons transfer from one atom to another
a)
ionic bond
b)
valence electrons
c)
covalent bond
13.
charged atom
a)
element
b)
ion
c)
isotope
d)
molecule
e)
atom
14.
formed when atoms share one or more pairs of electrons
a)
ionic bond
b)
valence electrons
c)
covalent bond
15.
atoms joined by chemical bonds
a)
element
b)
ion
c)
isotope
d)
molecule
e)
atom
16.
a slight attraction between the oppositely charged regions of nearby molecules
a)
van der Waals forces
b)
compound
c)
radioactive
100 %
