CHAPTER 5: MATTER AND ITS CHANGES
A change that begins and ends with the same type of matter.
What is the definition of a change of state?
A physical change in which one state of matter changes to another.
3 4/6 + 2 5/6 =
6 3/6 or 6 1/2
5 2/3 - 4 1/3 =
1 1/3
How many students are there in the 4th grade?
32
What is a sign of a physical change that we have discussed in class?
A change in SIZE, SHAPE, or POSITION.
Change from a solid to a liquid is called
Melting
15 2/4 + 12 2/4 =
28
16 2/4 - 5 3/4 =
10 3/4
Which animal is the only land mammal that can't jump?
Elephants
Adding energy to a substance is the same as _______
Heating a substance.
Change from a liquid to a gas rapidly is called
Boiling
9 1/10 + 3 4/10 =
12 5/10 or 12 1/2
56 4/6 - 29 5/6 =
26 5/6
Where is a shrimp's heart located?
In its head.
Taking away energy from a substance is the same as _________.
Cooling a substance.
Change of a liquid to a gas without boiling
Evaporation
120 4/5 + 119 3/5 =
240 2/5
650 3/5 - 402 4/5 =
247 4/5
1924
What is the definition of a chemical change?
A change that begins with one kind of matter and ends with another.
Change of a liquid into a solid is called
Freezing
10,256 6/8 + 293 3/8 =
10,550 1/8
1056 - 209 5/7 =
846 2/7
How many cards are in a deck of cards?
52 cards