Describing Matter
A __________ property is one that can be observed without changing the matter into something else.
Physical Property
_______ is the amount of matter in an object
Mass
A _______ change alters form or appearance but does not create a new substance
Physical change
A solid becoming a liquid is called
Melting
Lighting a match is an example of
A chemical change
An element is ....
True or false: Weight does not change even if the force of gravity on that object changes
False. Mass does not change even is the gravity experienced by that object changes.
A ______ change creates or breaks down a substance into a new substance
Chemical
Physical change
Carbon, Iron, Hydrogen, and Gold are examples of
Elements
Volume is ....
The amount of space that matter takes up
Bread dough rising is an example of ....
A chemical change
Warm/hot to cold objects
Air particles move faster when they are
Warm
Trail mix is an example of this type of mixture
Heterogeneous
What is the SI unit scientists use to measure mass?
Kilogram (kg)
A homogeneous mixture is
uniform throughout (eg. lemonade, salt water)
cannot be separated easily
Dissolving sugar into water and boiling off the water are both examples of ...
Physical changes
Energy cannot be created or destroyed is the
Law of conservation
Molecules
What is the equation for calculating density?
Density = Mass/Volume
Heterogenous mixture is one that
can be easily separated into its different components
Both Physical and chemical changes
Endothermic is when energy is absorbed (eg. ice melting)
Exothermic is when energy is released (eg. Combustion)