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WorksheetsChapter 1 science - intro to matter
Total questions: 56
Worksheet time: 1hrs 15mins
anything that has mass and takes up space.
substances
physical properties
chemistry
matter
atom
the study of matter and how it changes
atoms
chemistry
density
mass
biology
a single kind of matter that is pure meaning it always has specific makeup/composition.
atom
compound
substance
element
a characteristic of a substance that can be observed without changing it into another substance.
physical property
heterogeneous mixture
chemical property
homogeneous mixture
i don't know 👾
a characteristic of a substance that describes its ability to change into different substances.
(this question didn't repeat, pay attention)
physical property
homogeneous mixture
heterogeneous mixture
chemical property
i wouldn't know 👾
is a substance that cannot be broken down into any other substances by physical or chemical means
chemical bond
physical bond
element
molecule
the basic particle from which all elements are made.
compound
atom
mixture
element
is a force attraction between two atoms
physical bonds
gravity
chemical bonds
electrons
magnets
a group of 2 or more atoms held together by chemical bonds
chemical bond
molecule
physical bond
atom
compound
is a substance made of two or more elements that are chemically combined in a set ratio
mixture
element
chemical formula
weight
compound
which shows the elements in the compound and the ratio atoms
formulas
Chemical formulas
physical formulas
compound
mass
is made of two or more substances that are together in the same place, they are NOT chemically bonded
volume
compound
mixture
element
is a measure of the force of gravity on you
(a)
the amount of matter in an object
(a)
is used to measure properties of matter
mass
graduated cylinder
International System of Units (SI)
triple beam balance
the amount of space that matter occupies
weight
mass
gravity
volume
a measure of mass of a material given in volume.
kg
density
mass
physical change
volume
alters the form or appearance of matter but doesn't turn any substance in matter into a different substance
Law of conservation of mass.
chemical property
chemical change
physical property
physical change
_______ change- a change that produces 2 or more substances.
chemical
physical
The ______________________ says that matter is NOT created or destroyed in any chemical or physical change.
Law of Conservation of Mass
Law of Conservation of Energy
Law of Conservation of Momentum
Newtons 2nd Law of Motion
Law of Therioms
is a measure of how hot or cold something is
Temperture
Boiling point
thermal energy
is the total energy of motion of all of the particles in an object
thermal energy
kinetic energy
UV energy
thermal raditonal energy
a change in which energy is absorbed
endothermic change
exothermic change
chemical energy
is the energy stored in chemical bonds between two atoms is a form of energy
a change that produces 2 or more substances.
is made of two or more substances that are together in the same place . they are NOT chemically bonded
is a substance that cannot be broken down into any other substances by physical or chemical means
What two things are conserved during physical and chemical change?
mass and energy
mass and volume
mass and density
matter and mass
energy and physical chemical properties
READ ALL OF IT!
Matter is anything that has (a) and takes up space. The two properties of matter are physical and chemical properties. Physical properties are characteristics we can observe without changing. Chemical properties are characteristics of a substance that describe its ability to change into different substances.
Physical properties can be (a)
Examples of Physical Properties
Texture
Hardness
Melting/Boiling Point
Temperature
Shape
Chemical properties can be (a) into different substances.
Examples of Chemical Properties
Flammable
Combustible
Reaction to Light
Melting Point
What is mater made opf
atom
elemnts
molecules
quark
What holds atoms together in a compound?
chemical bonding or links between atoms
atoms arms which extend to attach to other atoms
atoms are combined by electrical current running from the electrons
How many atom(s) makes up a molecule?
just one
two or more
What is the reason why the ratio of atoms in molecules important?
if you have a different amount of atoms in a molecule then you will create a different molecule
if you don't have the exact amount of molecules in a molecule then it will not create a molecule but an substance
What are two types of mixtures? Give an example of each
homogeneous: trail mix
Heterogeneous: smoothie
homogeneous: smoothe
Heterogeneous: trail mix
homogeneous: noodle juice
Heterogeneous: orange peels
homogeneous: stormtrooper
Heterogeneous: yoda
How are mixtures different from compounds? How are they the same?
a mixture is 2 or more substances that are not chemically combined and a compound is 2 or more atoms bonded together. They are both the same because they both have 2 or more substances.
a mixture is made up of 1 substance that is not chemically combined and a compound is 2 or more elements bonded together. They are both the same because they contain atoms.
a mixture is a liquid which has many particles. a compound is 2 or atoms mixed together. they both contain something
Can mixtures be separated? If so, how?
Yes, a mixture can be separated if you use a mixture’s properties in order to separate the mixture into parts. There are many different ways to separate a mixture for example: distillation, evaporation, filtration, and magnetic attraction.
No, you cannot take out the substance from a mixture through physical or chemical means.
How is weight different from mass? Which one is more useful for measuring matter? Why?
weight is the measure of the force of gravity you and may change depending on location. Mass is the amount of matter in an object, and stays the same no matter where you are. Mass is more useful for measuring matter because it always stays the same, weight changes.
mass is the measure of the force of gravity you and may change depending on location. Weight is the amount of matter in an object, and stays the same no matter where you are. Weight is more useful for measuring matter because it always stays the same, weight changes.
What is the SI system and why do scientists use it? Know the SI units for mass, volume, and density.
take ur time
The SI system is the international system of elements, it’s used to measure elements of matter. The SI unit of elements is the kilogram (kg). The SI unit of mass is a cubic meter (m³). The SI unit of wight is miles (m)
The SI system is the international system of units, it’s used to measure properties of atoms. The SI unit of mass is the kilogram (kg). The SI unit of density is a cubic meter (m³). The SI unit of volume is kilogram per cubic meter (kg/m³)
The SI system is the international system of units, it’s used to measure properties of matter. The SI unit of mass is the kilogram (kg). The SI unit of volume is a cubic meter (m³). The SI unit of density is kilogram per cubic meter (kg/m³)
How is density determined? Is it a physical or chemical property?
Density is a physical property and you can determine the density of a sample of matter by dividing the mass by its volume
Density is a chemical property and you can determine the density of a sample of matter by dividing the perimeter by its volume
What is the difference between physical and chemical change?
physical property - something that can be observed without changing it into another substance
Chemical property - a characteristic of a substance that describes its ability to change into different substances
physical property - something that can be observed
Chemical property - a characteristic of a substance that describes its ability to change into different mixtures
physical property - something that can't be observed without changing it into another substance
Chemical property - a characteristic of a substance that describes its ability to change into different substances
physical property -a characteristic of a substance that describes its ability to change into different substances
Chemical property - something that can be observed without changing it into another substance
physical property - something that can be observed without changing it into another substance
Chemical property - a characteristic of a substance that describes its ability to change into different elements.
Ex. flammable --> elements like hydrogen
Examples of physical and chemical change
Ex. texture, shape, color, hardness, temperature, melting and boiling point
Ex. flammability, combustible, reaction to light
Ex. flammability, combustible, reaction to light
Ex. texture, shape, color, hardness, temperature, melting and boiling point
Ex. shape, color, hardness, temperature, melting and boiling point
Ex. flammability, combustible, reaction to light, Texture
Are changes in state physical or chemical changes? Explain how you know.
Physical, because changes in state do not involve changing the identity or makeup.
Ex: solid ice melts and becomes water, ice is made up of frozen water so when it melts it doesnt change.
Chemical, because changes in state involves changing the identity or makeup.
Ex: solid ice melts and becomes water, ice is made up of frozen water so when it melts it doesnt change.
Changes in matter can be (a) !
What is the difference between a physical change and chemical change?
Physical changes alter the form or appearance of matter but do not turn any substance in the matter into a different substance.
physical change is when an experiment is done by hand without any danger involved. Chemical change is when an experiment is done in a lab with much change involved.
Physical changes alter the makeup or matter of elements but do not turn any substance in the matter into a different substance.
physical can be seen, chemical cannot.
which of these are examples of physical changes?
baking a cake
snow melting
fireworks exploding
butter being used to make art
which of these are examples of chemical changes?
fireworks exploding
ice cube melting
butter art
metal rusting
baking a cake
The ____________ says that matter is NOT created or destroyed in any chemical or physical change.
scroll down for hint, it may make things more confusing:
(hint: the law of ___?____ of __?___. the answer has to include the law of _______ of ______)
(a)
How does the Law of Conservation of Mass relate to chemical changes?
you have lots of time, so read through the options
The carbon atom changes from a solid structure to a gas but its mass does not change. Similarly, the law of conservation of energy states that the amount of energy is neither created nor destroyed
The carbon footprint changes to a gas but its mass does not change. Similarly, the law of conservation of mass states that the amount of energy is neither created nor destroyed
The carbon atom changes
The carbon atom changes from a liquid structure to a solid but its volume does not change. Similarly, the law of conservation of energy states that the amount of light is neither created nor destroyed.
What is needed for chemical change to occur?
(you have 10 min on this question. take your time!)
one substance that stands alone but forms a substance without mixing with anything besides itself.
two or less substances combine to form different substances and molecules must collide with sufficient energy
two substances that are combined to form different substances+molecules.
two or more substances combine to form different substances and molecules that must collide with sufficient energy
What is the difference between an endothermic change and exothermic change?
Endothermic change-a change in which energy is absorbed
Exothermic change- release energy
Endothermic change-a change in which gravity is absorbed
Exothermic change- release matter
Endothermic change-release energy
Exothermic change- a change in which energy is absorbed
Endothermic change-a change in which water is absorbed
Exothermic change- release sunlight
what are examples of endothermic change?
photosynthesis
combustion
evaporation
burning of sugars
melting of ice
what are examples of exothermic changes?
changing water into an ice cube
ice melting
combustion
snow formation
What type of energy is stored in chemical bonds
(a)
how can chemical energy be used?
It can be used to give you energy of motion from foods you ate, it can change into other forms of energy and other forms of energy can change into chemical energy.
it can be used to conduct electricity
chemical energy can be used to make chemical substances that can become medicine but can be dangerous.
It can be used to give you energy of sleep from being tired digesting foods you ate, it can change into other forms of sleep and other forms of tiredness can change into chemical energy.
write whatever you want because your answers were fun to read last time. (do something original)
