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WorksheetsScience 7.PS1.1 Study Guide
Total questions: 49
Worksheet time: 24mins
What types of particles are located in the nucleus of an atom?
electrons and neutrons
neutrons and nuclei
protons and electrons
neutrons and protons
What type of charge does a proton have?
positive
negative
neutral
What type of charge does an electron have?
positive
negative
neutral
What type of charge does a neutron have?
positive
negative
neutral
The atomic number represents what parts of an atom?
the number of protons and neutrons in a neutral atom
the number of protons and electrons in a neutral atom
The Atomic Mass (usually, but not always a decimal number) represents the ______ and ______ in a neutral atom.
Draw in the number of valence electrons in each group above the arrow. Use your finger to write and be as neat as possible.
When the number of protons changes in an atom, what happens?
When the number of electrons changes in an atom, what happens?
When the number of neutrons changes in an atom, what happens?
The Atomic Mass (usually, but not always a decimal number) represents the ______ and ______ in a neutral atom.
How many protons does this atom have?
type in a number below
(a)
How many neutrons does this atom have?
type in a number below
(a)
Every element has a unique __________ ___________. This is determined by the number of protons in the nucleus of an atom.
proton
atomic number
atomic mass
number of neutrons
Every element has a unique __________ ___________. This is determined by the number of protons in the nucleus of an atom.
proton
atomic number
atomic mass
number of neutrons
The mass of the protons and neutrons in an atom is the ____________ ____________.
atomic mass
atomic number
electron cloud
number of electrons
The positively charged particles in an atom's nucleus
Proton
Electron
Neutron
cell
Each chemical element is made up of only one kind of
atom
molecule
electron
compound
Identify the part of the atom that the arrow is pointing to.
Electron
Neutron
Proton
What is the atomic mass of this element?
27
13
40
How many protons does this element have?
8
16
24
How many electrons does this element have?
27
13
40
The picture shows a model of a helium atom and a lithium atom. Which of the following statements is true about the lithium and helium atoms?
Helium has more protons, neutrons, and electrons.
Lithium is much smaller than helium.
There is no difference between helium and lithium.
Lithium has more protons, neutrons, and electrons
The part of an atom that would be found outside the nucleus is the ______.
neutron
proton
electron
positron
Neutrons are neutral. This means that
neutrons are not involved in chemical reactions.
neutrons do not have a charge.
neutrons do not have mass
neutrons are neither acidic or basic.
An uncharged atom has six electrons. The nucleus of this atom must contain _______ protons.
five
six
seven
eight
The _____ of an atom are negatively charged.
electrons
negatrons
neutrons
protons
Look at the lewis dot diagram. Notice the letters O, F, and N.
What does each of these letters represent?
Atoms
Electrons
Protons
Molecules
What is the diagram above represents what?
Compound
Molecule
Atom
Electrons
What is the atomic mass of Mg?
12
24
24.305
12.305
How many total protons does a Magnesium atom have?
24.305
12
How many neutrons does Neon have?
20
10
20.180
11
The number of electrons in an atom is the same as it's number of
neutrons
protons
Using the picture, what period is Be in?
2
1
3
6
Using the picture, how many valence electrons does this element have?
5
2
3
8
Elements in same group will have same chemical properties
True
False
Elements in same period will have same chemical properties
True
False
Elements in same group will have same electron valence.
True
False
