Physical and Chemical Changes
A change where matter changes its property, but the substance remains the same
Physical change
Two or more substances combined but can be easily separated
mixture
An object that allows heat to easily pass through it is a
conductor
What state of matter keeps its own shape instead of the shape of its container
solid
The force that attracts objects toward the center of the Earth
gravity
cutting, bending, freezing are examples of what type of change
physical
2 or more substances combined that physically change
Solution
An object that traps heat well is a
insulator
You break a cookie into crumbs. How does the weight of the whole cookie compare to the crumbled cookie
It is the same
True/false
A person's mass will be the same on the moon
True
A change when matter becomes completely new
chemical change
trailmix is an example of a...
mixture
What is the difference between water and other substances when frozen
Water expands while other materials contract
An empty beaker was measured and weighed 100 grams. Water was added to the beaker and now the total mass is 150g. The beaker was put in the freezer. After the water froze, what was the mass of the beaker?
150g
True/false
A persons weight will be the same on the moon
false
food rotting is an example of
chemical change
Chocolate milk is an example of a...
solution
Why is it a good thing that there is plastic around the metal part of the seatbelt?
plastic prevents the hot metal from burning your skin
Which state of matter has the loosest particles?
Gas
Two cars crashing is an example of what type of change
physical
salt dissolving in water is an example of a
physical change
What are the two components of a solution
solute
solvent
Reactions happen faster in what temperature?
hot
You have a pound of feathers and a pound of bricks. Which pile is heavier?
They are the same
A book is sitting on a table. Tasha says that gravity is not acting on the book because it is not falling through the air. Sammy says that gravity is always acting on an object even if it is not falling. Who is correct
Sammy