Vocabulary
Explain the change of a melted popsicle.
Physical Changes, You can melt and refreeze a popsicle and it will still be a popsicle.
shattered glass
physical change
The ability of a metal to be pulled into wires
ductility
Explain the change of an Alka-Seltzer and water.
Chemical Change. When you mix Alka-Seltzer and water, bubbles form, which indicates a chemical change as taken place.
Activating an ice pack
chemical change
The ability to for a substance to dissolve?
solubility
Explain the change of burning wood.
Chemical- new substance is formed (ash)
gass formed (smoke)
energy change (Heat & Light)
mixing an acid and a base together
chemical change
this chemcial property describes the ability of an object to react to oxygen to form rust
oxidation
Explain the change of eating food.
Physical- biting the food breaking it into pieces
Chemical- digesting the food changing it into waste (a new substance)
making an origami butterfly
physical change
the property of metal that enables it to be hammered in to sheets?
malleability
Explain how the water cycle an example of a physical change.
Water changes from a liquid/solid when it precipitates, to a gas when it evaporates, then forms back into a liquid when it condensates. Then the process repeats again with the same substance, WATER!
Name 5 signs of a chemical change
bubbles form. change in color
change in odor. heat/light emitted
formation of a precipitate (a solid)
new substance is formed/new properties
What are 5 physical properties?
answers will vary
color, odor, texture, temperature, density, solubility, viscosity, measurement, mass...