States of Matter
Define Matter
Anything that has mass (weight) and takes up space.
These are the characteristics of an object and you use your senses to identify them.
What are PHYSICAL PROPERTIES?
Type of change where the atoms are rearranged and form new substances.
What is a CHEMICAL CHANGE?
______ is the ability to do work.
What is Energy?
A battery is an example of what kind of energy?
What is chemical energy?
Describe two characteristics of a solid.
Closely packed atoms, has definite shape and size
A type of change where the substance stays the same, but size and shape may change.
What is a PHYSICAL CHANGE?
Melting chocolate is an example of….
What is a physical change?
What energy transfers are involved in photosynthesis?
____ energy → ____ energy
Radiant energy to chemical energy
Law of Conservation of Energy states that.....
Energy cannot be created or destroyed
Describe two characteristics of a liquid.
Atoms can move freely and will take the shape of any container yu put them in.
What are 5 physical properties?
shape, size, texture, odor, color, state of matter
What is a precipitate?
two liquids combine chemically and form a solid.
In an energy pyramid there are two energy transfers as you move up a trophic level.
__ → __
Chemical → Thermal
Food is chemical energy and the rest is lost as heat (thermal)
As Kinetic energy _____ then potential energy _____
As Kinetic energy increases then potential energy decreases.
As Kinetic energy decreases then potential energy increases
What is it called when a gas becomes a liquid? What happens to the heat?
What is condensation?
Heat is loss (gets colder)
Which of the following would be considered a physical change?
two liquids combine and get colder
a liquid and a solid combine and start bubbling
two liquids combine and form a solid
a solid is mixed into a liquid and completely dissolves
a solid is mixed into a liquid and completely dissolves
Identify the 5 evidence of a chemical change
Precipitate, unexpected color change, unexpected temperature change, odor change, formation of a gas (bubbling/fizzing) and new substance is formed
Match kinetic, chemical, potential and radiant energy to the given scenarios.
At the top of a rollercoaster ride this is the highest.
Skateboarding down a hill.
Gasoline burning in a car
The beginning process of photosynthesis (input)
At the top of a rollercoaster ride this is the highest. - Potential
Skateboarding down a hill. - Kinetic
Gasoline burning in a car - Chemical
The beginning process of photosynthesis (input) - Radiant
List 8 of the types of energy....
Chemical, Thermal, Electrical, Nuclear, Radiant, Kinetic, Mechanical, Potential
Explain what kind of change (physical/chemical) a change in states of matter is.
Physical change, because the substance is only changing in appearance, shape, size and/or texture. No new substances created.
Explain how the water cycle an example of a physical change.
What is YES, it is a physical change, because water changes from a liquid/solid when it precipitates, to a gas when it evaporates, then forms back into a liquid when it condensates. Then the process repeats again with the same substance, WATER!
Identify the following as physical or chemical changes.
A rusting bicycle
Melting butter for popcorn
Separating sand from gravel
Spoiling Food
Dissolving Koolaid powder into water
A rusting bicycle - Chemical
Melting butter for popcorn - Physical
Separating sand from gravel - Physical
Spoiling Food - Chemical
Dissolving Koolaid powder into water - Physical
What are the energy transformations occurring in a nuclear power plant to power a fan in a nuclear powered house?
__ → __→ __→ __
Nuclear → Thermal → Electrical → Mechanical/Kinetic
Atoms split (nuclear) and produces heat (thermal), which provides energy to a house (electricity) and moves the fan (mechanical)
What are the energy transfers when someone eats a protein bar and then goes and runs in a race?
__ → __ → __ → __
Chemical → Potential → Kinetic → Thermal
Food (chemical), beginning of race has stored (potential) energy, running the race (kinetic), heat (thermal) is given off as you run.