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Worksheetsch1 sec2
Total questions: 15
Worksheet time: 9mins
Name
Class
Date
1.
An atom's valence electrons are those electrons that have the HIGHEST energy
a)
True
b)
False
2.
In the periodic table, the number of valence electrons in each element DECREASES from left to right across each period.
a)
True
b)
False
3.
The reactivity of a metal depends on how easily it LOSES its valence electrons.
a)
True
b)
False
4.
The columns in the periodic table are called ___________.
a)
groups
b)
periods
5.
A(n) ___________ shows the number of valence electrons in an atom in pictorial fashion.
a)
chemical bond
b)
electron dot diagram
6.
The attractive force that holds two atoms together is called a(n) _______________.
a)
electron dot diagram
b)
chemical bond
7.
Protons are located in the nucleus of the atom. A proton has
a)
No charge
b)
A negative charge
c)
A positive and negative charge
d)
A positive charge
8.
In the process of covalent bonding, atoms __________electrons.
a)
Share
b)
Transfer
9.
Neutrons are in the nucleus of the atom. A neutron has
a)
A positive charge
b)
No charge
c)
A negative charge
d)
twice as much positive charge as a proton
10.
What is an atom?
a)
Anything that has mass and takes up space.
b)
The smallest unit of matter that still retains the properties of an element.
c)
A substance consisting of two or more different elements in a fixed ratio
d)
The smallest unit that can complete life functions
11.
Subatomic particle with a negative charge, has very little mass compared to other particles
a)
Proton
b)
Neutron
c)
Electron
d)
Alpha Particle
12.
Which of the following is a compound not mixture or element?
a)
Salt water
b)
Air
c)
Oxygen
d)
Carbon Dioxide
13.
What is a mixture?
a)
a combination of elements to make a new substance
b)
a chemically combined substance
c)
a combination of substances where new substances are formed through a reaction
d)
a combination of substances in which the atoms of the substance do not chemically combine
14.
How many electrons do atoms need to be stable?
a)
1
b)
2
c)
6
d)
8
15.
What does the 1 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
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