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WorksheetsPhysical Science midterm review
Total questions: 64
Worksheet time: 37mins
The smallest unit of matter.
element
atom
nucleus
Positively charged subatomic particles
protons
electrons
neutrons
nucleus
A subatomic particle with a neutral or no charge
protons
neutrons
electrons
The number on the periodic table for each element that shows how many protons and electrons it contains.
mass number
atomic number
valence electrons
The number of outermost electrons in the atomic structure.
protons
neutrons
valence electrons
atomic number
An organized diagram of all the elements.
periodic table
isotope notation
lewis dot diagram
A negatively charged subatomic particle.
protons
neutrons
electrons
Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons and therefore different mass numbers.
mass number
isotope
valence electron
The total number of protons and neutrons of each element.
atomic number
valance electrons
mass number
The center of an atom that contains protons and neutrons, also where the majority of the mass of an atom is contained.
protons
neutrons
electrons
nucleus
Group one of the periodic table contains one valence electron and is very reactive especially with the halogen family.
halogens
noble gases
alkali metals
transition metals
Group 2 of the periodic table contains 2 valence electrons and are also very reactive especially with the carbon family.
alkaline earth metals
transition metals
alkali metals
halogens
Group 7 of the periodic table, that starts with Fluorine, is not as reactive as the lower numbered groups but still commonly reacts with group 1.
noble gases
halogens
alkali metals
transition metals
A diagram that contains the symbol of the element surrounded by the number of valence electrons.
bhor model
valence electron
lewis dot diagram
A way to model the structure of an atom using the orbitals and the number of electrons.
Bohr model
Lewis dot diagram
valance electrons
Groups of common metals in the center of the periodic table with varying numbers of valence electrons.
alkali metals
alkaline earth metals
transition metals
noble gases
A chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell.
octet rule
atomic rule
thumb rule
The last group of elements on the periodic table that are very unreactive because of their full valence shells.
alkali metals
transition metals
noble gases
halogens
There are 2 types of chemical bonds ___________ and ____________.
metal, nonmetal
ionic, covalent
positive, negative
Any charged atom is called an _________.
cation
anion
ion
A positively charged ion is called a ___________.
ion
cation
anion
A negatively charged ion is called a ___________.
ion
cation
anion
Elements bond in order to find a __________ state.
fixed
unstable
stable
Elements commonly form compounds so that each atom is stable with ___________ electrons in its last energy level or shell.
1
2
6
8
Which is not a way that elements use electrons to bond?
gaining
sharing
multiplying
losing
_________ are chemicals made up of 2 or more elements bound together.
elements
compounds
atoms
Compounds have different properties or __________ than the elements that make them up.
smells
colors
behaviors
Positive and negative ions that combine to form a new chemical are called __________.
ionic
covalent
valence
Ionic bonds occur between a ____________ and non-metal.
nonmetal
metal
liquid
____________ bonds are chemicals that are created when the valence electrons are shared.
ionic
covalent
valence
Covalent bonds occur between nonmetals and _______________.
metals
nonmetals
solids
liquids
The elements on the periodic table can be separated into two distinctive groups metals and _____________.
solids
liquids
nonmetals
Metals are found on the ________ ________ side of the periodic table.
right hand
center part
left hand
Non-metals are found on the upper __________ _________ side of the periodic table.
left hand
right hand
center area
We call the original chemicals, on the left side of an equation, ___________.
products
reactants
catalysts
The chemicals that we end up, on the right side are called ___________.
products
reactants
catalysts
To save time, chemists have a quick way to write a chemical reaction. These summaries are called ___________ ______________.
chemical names
chemical terms
chemical equations
Chemical reactions can be represented using a word equation, where the _______ ________ of the chemicals involved are written out.
chemical equations
chemical names
chemical terms
This theory has been further developed by modern scientists into what is referred to today as “The Law of Conservation of ________”.
elements
atoms
mass
The Law of Conservation of Mass tells us that matter cannot be created nor _______________”. This means in a chemical reaction, you will have the same amount of reactants that you started with in the product(s).
changed
destroyed
reformed
Identify as ionic or covalent.
NaCl
ionic
covalent
Identify as ionic or covalent.
H2O
ionic
covalent
Identify as ionic or covalent.
MgO
ionic
covalent
Identify as ionic or covalent.
CO
ionic
covalent
What is the chemical name of the following formula:
(the numbers are subscripts)
P4S5
hexasulfur pentaphosphorus
tetraphosphorus pentasulfide
disulfur pentasulfide
What is the purpose of balancing a chemical equation?
to get more reactants than products
to get more products than reactant
to get an equal number of reactants and products
________ is the amount of matter in an object.
inertia
mass
velocity
The force that opposes the sliding motion between touching surfaces is called ___________.
friction
speed
motion
___________ is a push or pull exerted on an object.
motion
force
speed
The property of a moving object that equals its mass times its velocity is called ____________.
weight
momentum
speed
__________ tendency of an object to resist any change in its motion.
inertia
friction
acceleration
__________ is the gravitational force exerted on an object.
speed
mass
weight
__________ attractive force between two objects that depends on the masses of the objects and the distance between them.
acceleration
gravity
weight
The rate of the change of velocity; can be calculated by dividing the change in the velocity by the time it takes the change to occur is called ______________.
speed
velocity
acceleration
______ is the speed and direction of a moving object.
acceleration
velocity
momentum
_________ is the distance an object travels per unit of time
speed
velocity
acceleration
Match the correct formula for each motion concept.
speed
distance /time
velocity
distance/time with direction
momentum
mass X velocity
acceleration
final speed-initial speed/time
force
mass X acceleration
Newton’s 1st law of motion is known as the law of _____.
mass X acceleration
inertia
action-reaction
Force that slows objects down.
friction
gravity
momentum
Force is measured in the units ________.
kilograms
meters
newtons
Newton's 3rd law of motion is known as the _______-_______ law.
inertia-action
action-reaction
force-mass
Newton’s 3rd law of motion states that for every (a) there is an (b) and (c) reaction.
Newton’s 2nd law of motion states that (a) is equal to the (b) times its acceleration.
Newton’s 1st law of motion states that an object at (a) will remain at rest unless acted upon by an (b) . Also an object in (c) will stay in motion unless acted upon by a (d) force.
