WorksheetsCH. 2 Properties of Atoms and the Periodic Table
Total questions: 35
Worksheet time: 26mins
Which is the subatomic particle with a positive charge?
electron
neutron
proton
atom
An atom's nucleus has a ________ charge.
positive
nedative
neutral
Which subatomic particle(s) is found in the nucleus?
electron
proton
neutron
B refers to the
(a)
Why can't atoms touch?
They don't like each other.
The negative electrons attract each other.
The negative electrons repel each other.
The positive electrons attract each other.
The positive electrons repel each other.
What do like charges do?
Attract each other
Repel each other
This model of the atom is referred to as the (a) Model.
Which atomic model is a solid sphere?
Democritus
Thomson
Rutherford
Bohr
Electron Cloud
Which atomic model shows negatively charged electrons embedded in a sphere like chocolate chips in a cookie?
Democritus
Thomson
Rutherford
Bohr
Electron Cloud
Atoms are neutral because the number of protons is equal to the number of ______.
neutrons
protons
electrons
charges
Which model is this?
Democritus
Thomson
Rutherford
Bohr
Electron Cloud
During his gold foil experiment, Ernest Rutherford observed that most of the particles when they hit the gold foil did what?
Most of the particles bounced backwards
Most of the particles flew straight through the gold foil
Most of the particles were deflected off to the sides
Most of the particles got stuck in the foil like flies in a spider web
During Ernest Rutherford's gold foil experiment, what was it that Rutherford learned?
Atoms are very dense and alpha particles cannot fly through them
The nucleus takes up most of the space in the atom
The nucleus is the lightest part of the atom
The nucleus only takes up 0.01% of the space in the atom
Mass number can be found by adding the number of (a) to the number of neutrons.
Can you find an element's mass number on the periodic table?
Yes
No
Isotopes refers to atoms of the same element with different numbers of (a) .
Different isotopes of a particular element contain the same number of ________.
protons
neutrons
protons & neutrons
mass
In the symbol 14x C, x is equal to --
7
13
6
12
What is the average mass of this element?
What is the net charge of an atom that has 5 protons, 6 neutrons and 3 electrons?
-3
+2
-2
+5
Rutherford realized that the atomic nucleus was positively charged because
it attracted alpha particles.
it deflected alpha particles.
it had no effect on alpha particles.
it produced alpha particles.
Whose model suggested that negative particles were mixed in with positively charged material - like seeds in a watermelon?
J.J. Thomson
Ernest Rutherford
Niels Bohr
Albert Einstein
Name this element.
Neon
Magnesium
Sodium
Manganese
What is the atomic number of this atom?
2
4
6
8
What is the symbols for the element sodium?
(a)
Where is most of the mass of an atom found?
the nucleus
the electron cloud
The large machines that were used to discover quarks by smashing high speed particles into protons are called _________ _______.
(a)
