Worksheets9th Final Exam Practice
Total questions: 54
Worksheet time: 27mins
What is an element?
A pure substance made of only one kind of atom
Two or more elements chemically combined
Two or more substances physically combined
A mixture of gases
Which of the following is a chemical property?
Color
Density
Flammability
Mass
What is a compound?
A pure substance made of only one kind of atom
Two or more elements chemically combined
Two or more substances physically combined
A mixture of liquids
Which property describes the ability to be hammered into thin sheets?
Solubility
Malleability
Conductivity
Hardness
What is a mixture?
A pure substance made of only one kind of atom
Two or more elements chemically combined
Two or more substances physically combined
A single element
What is the ability of a substance to react with oxygen called?
Fermentation
Oxidation
Decomposition
Tarnishing
Which state of matter has a definite shape and definite volume?
Liquid
Gas
Solid
Plasma
What is a mixture?
A single pure substance
Two or more substances chemically combined
Two or more substances physically combined
A substance that cannot be separated
Which state of matter has no definite shape or volume?
Solid
Liquid
Gas
Plasma
What is a characteristic of a heterogeneous mixture?
The components are evenly distributed.
The components are not visibly separate.
You can see the individual parts and they can be easily separated.
It looks like one single substance.
Which of the following is an example of a homogeneous mixture?
Salad
Granite
Sand and water
Saltwater
What is the role of a solvent in a solution?
It is the substance being dissolved.
It is the liquid in which a solute is dissolved.
It is a solid that forms in a solution.
It is a gas that evaporates from a solution.
Which of the following is a sign of a physical change?
Formation of a new substance
Change in chemical composition
Change in appearance or state without changing chemical composition
Release of gas
Which of the following is an example of a change in state of matter?
Cutting paper
Melting ice
Bending a wire
Dissolving sugar
What is a sign of a chemical change?
Bending a metal wire
Melting ice
Rusting of iron
Dissolving sugar
Which of the following indicates a chemical reaction has occurred?
A new smell appears
A metal wire is stretched
Ice melts
Sugar dissolves in water
What happens during a chemical change?
The substance changes shape
The chemical composition changes
The substance dissolves
The substance changes state
Which of the following is an example of gas production in a chemical reaction?
Melting ice
Vinegar and baking soda reaction
Cutting paper
Stretching a rubber band
What happens to mass during chemical reactions?
It is created.
It is destroyed.
It is conserved.
It is doubled.
Which process describes the change from solid to liquid?
Freezing
Melting
Condensation
Deposition
What is an example of sublimation?
Ice melting into water
Water vapor condensing on a glass
Dry ice turning into gas
Water freezing into ice
What is the atomic number equal to?
Number of neutrons
Number of electrons
Number of protons
Number of protons + neutrons
What type of bond involves the sharing of electrons?
Ionic bond
Metallic bond
Covalent bond
Hydrogen bond
What is transferred in an ionic bond?
Protons
Neutrons
Electrons
Photons
What is an atom with the same number of protons but a different number of neutrons called?
Ion
Isotope
Molecule
Compound
When does an atom have a neutral charge?
When protons > electrons
When protons < electrons
When protons = electrons
When neutrons = electrons
Where are metals typically found on the periodic table?
Right side
Left side
Top
Bottom
What is the formula for density?
Density = Mass × Volume
Density = Mass ÷ Volume
Density = Volume ÷ Mass
Density = Mass + Volume
What principle is followed when balancing chemical equations?
Law of gravity
Law of conservation of energy
Law of conservation of mass
Law of thermodynamics
What is the balanced chemical equation for magnesium reacting with hydrochloric acid?
Mg + HCl → MgCl2 + H2
Mg + 2HCl → MgCl2 + H2
2Mg + HCl → MgCl2 + H2
Mg + HCl → MgCl + H2
According to Newton's 1st Law, what happens to an object at rest?
It starts moving on its own.
It remains at rest unless acted on by a net external force.
It accelerates without any force.
It changes direction spontaneously.
Which of the following is an example of balanced forces?
A car accelerating on a highway.
A book resting on a table.
A ball rolling down a hill.
A rocket launching into space.
What is the formula for force according to Newton's 2nd Law?
Force = mass + acceleration
Force = mass × acceleration
Force = mass / acceleration
Force = acceleration / mass
What is Newton's Third Law of Motion?
For every action, there is an equal and opposite reaction.
An object in motion stays in motion unless acted upon by an external force.
The force of an object is equal to its mass times its acceleration.
Energy cannot be created or destroyed, only transformed.
Which of the following is an example of kinetic energy?
A rolling soccer ball
A stretched rubber band
A book on a shelf
A compressed spring
What happens when you kick a soccer ball harder?
It accelerates faster and travels farther.
It slows down and stops quickly.
It changes direction immediately.
It remains at rest.
Which example illustrates potential energy?
A stretched rubber band
A moving car
Water flowing in a river
A person running
In the context of Newton's Third Law, what happens when a swimmer pushes water backward?
The water pushes the swimmer forward.
The swimmer remains stationary.
The swimmer moves backward.
The water remains still.
What is the process called when heat is transferred through direct contact between particles of matter?
Convection
Radiation
Conduction
Evaporation
Which type of heat transfer involves the movement of fluids such as liquids or gases?
Conduction
Convection
Radiation
Insulation
How is heat transferred through electromagnetic waves without direct contact?
Conduction
Convection
Radiation
Conduction
Which of the following is an example of electrical energy being converted to light energy?
A fan spinning
A light bulb lighting up
Burning wood
A car engine running
What type of energy conversion occurs when burning wood in a campfire?
Electrical to Mechanical
Chemical to Heat
Light to Electrical
Mechanical to Chemical
What type of energy transformation occurs when plants use sunlight to make food through photosynthesis?
Light Energy to Chemical Energy
Mechanical Energy to Sound Energy
Electrical Energy to Heat Energy
Kinetic Energy to Thermal Energy
Which energy transformation is demonstrated by a wind turbine generating electricity?
Mechanical Energy to Electrical Energy
Heat Energy to Mechanical Energy
Light Energy to Heat Energy
Electrical Energy to Heat Energy
What is the frequency of a wave if there are 4 crests per second?
4 Hz
2 Hz
6 Hz
8 Hz
What happens when you rub your hands together quickly?
Kinetic Energy to Thermal Energy
Light Energy to Chemical Energy
Mechanical Energy to Sound Energy
Electrical Energy to Heat Energy
What is the bending of waves as they pass from one medium to another called?
Diffraction
Reflection
Refraction
Absorption
Which term describes the spreading of waves around barriers?
Reflection
Diffraction
Absorption
Refraction
What is the bouncing of waves off a surface known as?
Absorption
Refraction
Diffraction
Reflection
In an experiment, what is the group called that does not receive the independent variable?
Experimental group
Control group
Variable group
Test group
What is the term for what is changed on purpose in an experiment?
Dependent variable
Constant
Independent variable
Control variable
What is measured in an experiment?
Independent variable
Dependent variable
Constant
Control group
What are factors that stay the same in all groups of an experiment called?
Variables
Constants
Controls
Measurements
