States of Matter
This state has tightly packed molecules with little movement
solid
Going from a solid to a liquid is called?
melting
Is a physical of chemical change?
Boiling Water
Physical Change
when two or more pure substances are mixed together
mixture
Outside there is a puddle on a sunny day. After a while the puddle disappears. What change of state did we observe? ______to______
liquid to gas
This state of matter, takes the shape of its container and has a definite volume.
liquid
Going from a liquid to a gas is called?
vaporization, boiling, evaporation
Is it a physical or chemical change?
Baking a cake
Chemical
A mixture of two or more substances not consistent throughout
heterogeneous mixture
Mrs. Irish created a solution with sugar and water. She weighed the solution separately and then when it was mixed together. Would the weight be less, stay the same, or increase?
Stay the same
This state has no definite volume and has very active molecules
gas
When water is put in the freezer, what state of matter change do we observe?
Freezing
Is it a physical or chemical change?
Baking soda and vinegar
Chemical Change
A mixture that is consistent throughout
homogeneous mixture
Mrs. Irish was baking cupcakes for the teachers at Vinson-Owen. She was making funfetti cupcakes (flour, sprinkles etc). What type of mixture did she make before she baked it? (heterogeneous, homogeneous)
When she baked it, what type of change occurred?
(physical or chemical)
heterogeneous
chemical
What are the three states of matter?
solid, liquid, gas
In order to change states of matter______needs to be added or removed from matter.
heat
kinetic energy
Name two characteristics of a physical change
easily reversed
no new products are made
often just a state change
Identify which is a homogeneous mixture and which is a heterogeneous mixture:
suspension, colloid, solution
Homogeneous: solution
Heterogeneous: colloid and suspension
In our three experiments from class, identify one example of melting, dissolving, and reacting. Identify if it is a physical or chemical change?
-think ice cubes, baking soda and vinegar, and sugar water
melting: ice cubes (physical)
reacting: baking soda and vinegar (chemical)
dissolving: sugar water (physical)
Define matter.
Anything that has weight and takes up space (has volume)
boiling, vaporization
(liquid to gas)
Name two characteristics of a chemical change
not easily reversed or cannot be reversed
new products are made
may release light, smell, sound, or gas
In the macaroni salad example, identify one substances that was a suspension, colloid, and solution from the following list mayonnaise, mustard, vinegar.
mayo-colloid
mustard-suspension
vinegar-solution
A)What would you do to reverse the ice cube experiment?
B)What would you do to reverse the sugar cube experiment?
freeze the ice cubes (take away energy)
heat the solution to separate the water and the sugar (add energy)