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22 Cards in this Set

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  • Back
To change a liquid to a solid, ____ (more or less) heat must be applied?
LESS
When more energy is transferred to an object, what must have increased?
its temperature
When oxygen in the air reacts with iron to form iron oxide (rust), this is an example of a chemical change or a physical change?
CHEMICAL CHANGE
To measure the volume of an irregularly shaped object, you should use ...
a graduated cylinder
Cutting paper is an example of
a physicl change or chemical change?
PHYSICL CHANGE
A chemical change always produces a new substance. True or False?
True
In what state of matter do the molecules have the most kinetic energy?
GAS
A liquid becomes a solid when there is less or more energy/heat?
LESS
Breaking your pencil in half--exmple of chemicl or physical change?
physical change
Lightning is an example of what state of matter?
PLASMA
The mass of an object is always constant--True or False?
True
When molecules loose energy/heat, they move more rapidyl or slowly?
SLOWLY
______ depends on the gravitational pull against that object
WEIGHT
In what state of matter do the molecules slip and slid around?
LIQUID
To measure a block of wood, which measuring tool should you use?
a balance
Sometimes you might hear the state of matter describe as the ______ of matter
phase
Burning paper is an example of a physical change or a chemical change?
CHEMICAL CHANGE
Weight and mass are the same thing--true or false
false
In which state of matter are the molecules farthest apart?
GAS
______ is the pull that gravity has on an object.
MASS
To find the volume of a regular rectangle, you would use the formula ...
length x width x height
(L x W x H )
In what state of matter are the molecules the closest?
SOLID