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States of Matter
Changes of State
Changes of State 2
Physical vs. Chemical Changes
Physical vs. Chemical Changes 2
100
A ______________ is a state of matter that has a constant volume and a constant shape.
solid
100

The change from a liquid to a solid, or the reverse of melting, is called _____.

freezing

100

When the particles in a gas cool enough to form a liquid, ________ occurs.

condensation

100
Anything that has mass and takes up space is called
Matter
100

Name 2 physical changes that could occur to a t-shirt

Various answers. 

200

The state of matter in which the particles spread apart and fill the space available is called a ________, which does not have a definite shape or volume.

gas

200

The change of state when the particles of a solid gain enough energy to break free and become a liquid is called _______.

melting

200

For water to change from one state to another, ________ must be added or taken away

energy 

200
A type of change where the substance stays the same, but size and shape may change.
Physical Change
200
Describe the difference between a physical and a chemical change.
A physical change does not create a new substance, a chemical change creates a new substance.
300
In a ____________, the particles are packed somewhat closely but move around each other freely and take the shape of its container.
liquid
300

To change states of matter, a change in _________ is needed

energy, temperature

300

As a substance changes from a liquid to a gas, the distance between its particles________

increases

300

Give at least 2 pieces of evidence that a chemical change has occured

Release or taking in of energy, change in color, change in smell, a new substance is formed

300
State why rusting is considered a chemical change.
Because a new substance (rust) is formed. New substances always mean chemical changes.
400
A ________ is a substance that flows.
liquid
400

Vaporization (liquid changing to gas) that takes place only at the surface of a liquid is called ________.

evaporation

400

Explain what happens to a puddle from a rainstorm on a sunny day.

Evaporation takes place. The sun heats up the puddle and the particles of the liquid gain enough thermal energy to become a gas on the surface. This continues to happen until the puddle dries up completely.

400

Water evaporating in a boiling pot of a water is an example of a ___________ change

Physical

400
Compare solids, liquids, and gases in terms of their shapes and volumes.
Solid - definite shape and definite volume. Liquid - definite volume, no definite shape (takes shape of container). Gas - no definite shape, no definite volume.
500

The scientific name for a substance that can behave like both a liquid and a solid, depending on the amount of force applied to it (Ooblec is an example)

Non-Newtonian Fluid

500

__________ is the name given to the process when a liquid vaporizes (become a gas) throughout the whole liquid, not just on the surface.

Boiling

500

When enough energy is taken in by a liquid, the particles form a gas. The scientific name for this process is __________.

vaporization

500

Is digesting food considered a physical or chemical change?

Chemical Change

500

Explain or draw a labeled diagram showing how the movement of particles differs in gases, liquids, and solids.

Solids - particles are tightly packed, slightly vibrating. Liquids - particles are closely packed but freely moving around each other. Gases - particles move freely and in all directions, filling the entire space of the container.