States of Matter
Anything that takes up space and has mass.
What is matter?
Gas becomes a liquid. Example: dew on grass.
What is condensation?
Characteristics that can be observed or measured without changing what the matter is made up of.
What are physical properties?
A combination of 2 or more different kinds of matter, each of which keeps its own physical properties. They can be easily separated.
What is a mixture?
When something changes it's size, shape, color, or texture. It is still the same substance, just in a different form.
What is a physical change?
-particles are packed tightly
-vibrate in place
-have a set shape
Example: desk
What is a solid?
Liquid becomes a gas. Example: steam.
What is evaporation?
Properties that deal with your five senses: sight, sound, smell, taste, touch.
What are observable properties?
A mixture of two or more substances, where one dissolves into the other.
What is a solution?
When a substance changes and the reaction cannot be undone. A new substance is formed.
What is a chemical change?
-particles are loosely packed
-move slowly
-take the shape of the container they are in
Example: water
What is a liquid?
Liquid becomes a solid. Example: puddle becoming solid on a cold day.
What is freezing?
Properties that deal with height, length, weight, volume, temperature, and boiling/freezing point.
What are measurable properties?
The matter that dissolves into something else. Example: sugar
What is a solute?
Examples: cutting paper, adding milk to cereal, getting a haircut, washing your hands
What are physical changes?
-particles are spread out
-move quickly
-no set shape
Example: Carbon Dioxide
What is a gas?
Solid becomes a liquid. Example: puddle thaws on a warm day.
What is melting?
Length x Width x Height= ? (cm^3)
What is volume?
The matter that does the dissolving.
What is a solvent?
Examples: digesting food, baking a cake, engines burning fuel, bleaching your hair
What are chemical changes?
Building blocks of elements/make up everything
What are atoms?
Is a change of state a physical or chemical change?
What is a physical change?
How do you find the volume of an irregular object?
What is the water displacement method?
Using a graduated cylinder, take the beginning measurement of water, then place the irregular object in and take the ending measurement.
Ending - Beginning = Volume (mL)
Matter can neither be created nor destroyed, it only changes state.
What is the law of conservation of matter?
Light is created, temperature changes, color changes, gas is created, production of odor or sound, creation of a new substance is created.
What are the tell-tell signs of a chemical reaction?