Worksheetsscience 11.30
Total questions: 15
Worksheet time: 1hrs 15mins
Name
Class
Date
1.
Compounds are named according to the ________ they are made from
a)
compounds
b)
molecules
c)
atoms
d)
elements
2.
A ___________ that has two different elements usually has a name with two words.
a)
compound
b)
atom
c)
element
d)
oxygen
3.
The smallest unit of functional matter is an _______
a)
electron
b)
proton
c)
atom
d)
neutron
4.
All matter on Earth is made of ________
a)
protons
b)
molecules
c)
nuetrons
d)
atoms
5.
When atoms are joined they form _________ and __________
a)
molecules, compounds
b)
protons, electrons
c)
neutrons, nuclei
d)
oxigen, hydrogen
6.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
7.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
8.
True or False? Neutrons have a negative charge
a)
True
b)
False
9.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
10.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
11.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
12.
What are the particles that protons and neutrons made up of called?
a)
atoms
b)
electrons
c)
quarks
d)
bits
13.
The nucleus is the center of?
a)
Atom
b)
Cell
c)
Molocule
d)
Particle
14.
The symbol for Carbon is
a)
6
b)
12.011
c)
C
d)
Ca
15.
What is the overall charge of the electron cloud?
a)
positive
b)
negative
c)
neutral
100 %
