WorksheetsGrade 8 Science Georgia Milestones Review
Total questions: 1
Worksheet time: 37mins
What is an element in the context of matter?
A molecule that can be broken down into simpler substances
Matter that cannot be broken down into simpler substances
A compound consisting of two or more elements
The smallest part of an element that is still considered an element
What is the smallest part of an element that is still considered an element?
A molecule
A compound
An atom
A mixture
What is a molecule?
A single atom that can exist independently
A particle that is made of two or more atoms which forms an element if atoms are the same
A substance that cannot be broken down into simpler substances
A combination of two or more different elements
Which of the following is an example of a compound?
Oxygen (O2)
Hydrogen (H)
Table Salt (NaCl)
Nitrogen (N2)
What defines a compound?
A substance made of one type of atom
A mixture of different molecules
Atoms of two or more elements combined in a chemical reaction
A molecule made of atoms from the same element
What is the characteristic of a mixture that is considered heterogeneous?
It is the same throughout the mixture.
It forms a new substance.
It is noticeably different throughout.
It cannot be separated into individual components.
What does the term "homogeneous" refer to in a mixture?
The mixture has a shiny appearance.
The mixture is malleable.
The mixture is the same throughout.
The mixture forms a new substance.
What does "luster" refer to when describing an element?
The ability to be pulled into wires.
The ability to be rolled or pulled into shapes.
The color of the element.
How shiny the element is.
What does it mean if a substance is described as malleable?
It can be dissolved in water.
It can be rolled or pulled into shapes.
It is very hard and brittle.
It is a homogeneous mixture.
What is a characteristic of pure substances?
They can be separated by physical means.
They consist of multiple types of particles.
They are made up of only one kind of particle.
They include pizza and Italian salad dressing.
Which of the following is an example of a heterogeneous mixture?
Salt water
Table salt
Pizza
Oxygen
What can compounds be broken down into by chemical reactions?
Mixtures
Elements
Homogeneous mixtures
Heterogeneous mixtures
Which of the following is an example of a homogeneous mixture?
Iron
Solid waste dump
Salt water
Hydrogen
What is the main difference between elements and compounds?
Compounds can be broken down into simpler substances by chemical reactions, while elements cannot.
Elements can be separated by physical means, while compounds cannot.
Elements are mixtures, while compounds are pure substances.
Compounds are made of one kind of particle, while elements are made of multiple kinds.
What is a characteristic of solids?
No definite shape
No definite volume
Definite shape and volume
Tiny charged particles
What do liquids have?
Definite shape and volume
No definite shape but definite volume
No definite volume or shape
Tiny charged particles
What is true about gases?
Definite shape and volume
No definite shape but definite volume
No definite volume or shape
Tiny charged particles
What is plasma composed of?
Definite shape and volume
No definite shape but definite volume
No definite volume or shape
Tiny charged particles
At what temperature does water change from solid to liquid, known as the melting point?
32 degrees Fahrenheit
0 degrees Fahrenheit
100 degrees Fahrenheit
212 degrees Fahrenheit
What is the process called when a liquid turns into a gas?
Freezing
Melting
Boiling
Condensation
At what temperature does water boil, changing from liquid to gas?
32 degrees Fahrenheit
0 degrees Fahrenheit
100 degrees Fahrenheit
212 degrees Fahrenheit
What is the temperature at which condensation occurs for water?
32 degrees Fahrenheit
0 degrees Fahrenheit
100 degrees Fahrenheit
212 degrees Fahrenheit
Is the freezing point of water at the same temperature as its melting point?
Yes, they are at different temperatures.
No, they are at the same temperature.
Yes, but only under high pressure.
No, but only under high pressure.
How do particles move in a solid, liquid, and gas?
Particles in a solid move freely and quickly, while in a liquid they are more structured, and in a gas, they are tightly packed.
Particles in a solid are tightly packed and vibrate in place, in a liquid they move more freely, and in a gas, they move very quickly and are far apart.
Particles in a solid move very quickly and are far apart, in a liquid they are tightly packed and vibrate, and in a gas, they are structured but move freely.
Particles in all three states of matter move in the same way and at the same speed.
Which of the following is NOT a physical property of matter?
Color
Odor
Chemical reactivity
Texture
What does density refer to in the context of physical properties of matter?
The ability to dissolve into another substance
The color of the substance
Mass divided by volume
The boiling point of the substance
Which physical property of matter is described as the ability to dissolve into another substance?
Melting point
Solubility
Density
Boiling point
What happens to the density of a substance as the temperature changes?
It does not change
It only increases
It only decreases
It changes
What are chemical properties?
Properties that can be observed without changing the substance
Characteristics that describe how substances behave in chemical reactions
The mass and volume of a substance
The color and shape of a substance
What does reactivity refer to in terms of chemical properties?
The ability to dissolve in water
The ability to change color when heated
The ability to form one or more new substances by combining
The ability to remain unchanged during a reaction
Which of the following is an example of a substance formed due to reactivity?
Water
Salt
Rust
Oxygen
What is the term for the ability of a substance to catch fire or burn?
Flammability
Combustibility
Inflammability
Reactivity
What does the Law of Conservation of Energy state?
Energy can be created and destroyed
Energy cannot be created but can be destroyed
Energy can be created but cannot be destroyed
Energy cannot be created or destroyed
According to the Law of Conservation of Matter, matter __________.
can be created and destroyed
cannot be created but can be destroyed
can be created but cannot be destroyed
cannot be created or destroyed
What is an example of a physical change?
Burning wood
Rusting iron
Ice melting
Baking a cake
What is a characteristic of a chemical change?
It can be easily reversed
It does not produce new substances
It can be reversed by changing the shape or color
It cannot be reversed
What do chemical equations show?
The physical state of reactants and products
The color change in reactants and products
What happens to reactants and products with specific ratios
The temperature change in reactants and products
In a chemical equation, what are Na and Cl before they react to form NaCl?
Reactants
Catalysts
Products
Byproducts
What are at the end of the chemical equation Na + Cl = NaCl?
Reactants
Catalysts
Byproducts
Products
How is the periodic table arranged in terms of reactivity?
From less reactive (left hand side) to more reactive (right hand side)
From more reactive (left hand side) to less reactive (right hand side)
From high atomic number to low atomic number
From solid elements to gaseous elements
What are the vertical columns on the periodic table also called?
Periods
Groups or families
Rows
Clusters
What do elements in the same group of the periodic table have in common?
They have the same atomic number.
They have the same number of protons.
They have similar properties and share the same number of electrons in their outer energy levels or valence shells.
They are all metals.
What happens to the atomic number as you go from left to right across a period in the periodic table?
It decreases.
It remains the same.
It increases.
It varies unpredictably.
Which of the following is a characteristic of metals?
Poor conductors of electricity
Non-reactive with other elements
Good conductors of electricity
Found only in liquid state at room temperature
What percentage of the periodic table do metals occupy?
25%
50%
75%
100%
Which group of metals is very reactive and found in nature?
Alkali Earth Metals
Transition Metals
Alkali Metals
Noble Gases
Alkali Earth Metals are found in which group and how are they characterized in terms of reactivity?
Group 1, very reactive
Group 2, slightly less reactive
Group 3, non-reactive
Group 7, highly reactive
Where are Transition Metals located on the periodic table?
Top of the table
Bottom of the table
Left side of the table
Middle of the table
What are the characteristics of Noble Gases?
Reactive, colored, odorous
Non reactive, colorless, odorless
Group 17, highly reactive
Properties of metals and nonmetals
Which group do highly reactive non-metals belong to?
Group 15
Group 16
Group 17
Group 18
What do metalloids exhibit properties of?
Only metals
Only nonmetals
Both metals and nonmetals
Neither metals nor nonmetals
What is the term used to describe elements with properties of both metals and nonmetals?
Non-Metals
Noble Gases
Metalloids
Alkali Metals
According to the law of conservation of energy, energy cannot be __________.
transferred
created nor destroyed
converted
used
Potential energy is the energy that is stored and depends on the __________.
speed of the object
temperature of the object
height of the object
color of the object
Which of the following is an example of potential energy?
A roller coaster at the top of the hill
A bowling ball rolling down the alley
A running motor
A burning fire
Kinetic energy is the energy of __________.
position
motion
color
temperature
Which type of energy is NOT listed as a type of potential energy?
Stored Mechanical
Nuclear
Thermal
Chemical
Which of the following is NOT a type of kinetic energy?
Thermal
Mechanical
Electricity
Stored Mechanical
What is the difference between potential and kinetic energy?
Potential energy is the energy of motion, while kinetic energy is the energy stored due to an object's position.
Potential energy is the energy stored due to an object's position, while kinetic energy is the energy of motion.
Potential energy and kinetic energy both refer to the energy of motion, but kinetic energy is a type of potential energy.
There is no difference; potential energy and kinetic energy are terms for the same concept.
What is electrical energy?
Energy of the moving particles that make up matter
Energy that travels as electromagnetic waves
Energy given off by vibrating objects
Energy of moving electric charges
Which of the following is an example of radiant energy?
Wind
Lightning
X-rays
Music
What type of energy is produced by vibrating objects?
Thermal Energy
Sound Energy
Mechanical Energy
Electrical Energy
Mechanical energy is the energy of motion used to do work. Which of the following is NOT an example of mechanical energy?
Flowing water
Machines
Geothermal energy
Wind
What is thermal energy?
Energy that maintains your body’s temperature
Energy of moving electric charges
Energy given off by vibrating objects
Energy of motion used to do work
What is chemical energy?
Energy stored in the bonds that hold atoms together
Energy stored in the nuclei of atoms
Energy caused by the position of an object
Energy stored in an object when a force is applied to it
Which of the following is an example of nuclear energy?
Roller coaster at the top of a hill
Fusion in stars
Compressed spring
Foods
Gravitational energy is best described as:
Energy stored in the bonds that hold atoms together
Energy stored in the nuclei of atoms
Energy of position
Energy stored in an object because a force was applied to it
Which of the following is an example of stored mechanical energy?
Nuclear power plants
Pendulum
Stretched rubber band
Foods
Name two types of energy used in your classroom.
Kinetic and potential energy
Electrical and thermal energy
Chemical and nuclear energy
Solar and wind energy
