MATTER
Matter that has definite volume but no definite shape is a(n) ______________________
What is a liquid
Which of these are a physical property of matter?
A - the ability to burn
B- The ability to rust
C- the ability to decay
D- The ability to dissolve
D - the ability to dissolve
A- Orange Juice
B- unsweet tea
C- Soda
D- gelatin with bananas
E - trail mix
trail mix
gelatin with bananas
OJ
Forces that CAUSE a change in motion are ______
unbalanced forces
When the last kind of a species dies, the species is _____
extinct
A mixture that has the same composition throughout is called a(n)
What is a solution
Which of the following is NOT an example of change in state?
A - Chipping ice off of a block
B - Dissolving Alka-Seltzer tablet
C- Melting Butter
D - Freezing ice cubes
A - chipping ice
Which temperature will dissolve sugar the fastest?
A - 123 degrees Celcius
B - 90 degrees Celsius
C- 45 degrees Celsius
A - 123 degrees Celsius
It is the warmest
A force of attraction between 2 objects, even if they are not touching is ________________
gravity
The remains or traces of a plant or animal that lived long ago is _________
fossil
Changes in one or more substances that for new and different substances are called _______________
What is a chemical change
Temperature _________ to make a gas a liquid and a liquid a solid.
What is decreases
Describe how water changes states
Liquid water is heated to form steam(gas) Steam(gas) is cooled to form liquid
Liquid is cooled to form solid
A push or a pull that causes movement or a change in movement is called a ______
force
An impression of an organism, formed when sediment hardens around an organism is called a _______ fossil
mold
Changes in which the form or shape of a substance change but the substance still has the same chemical make-up are called _________ changes
What are physical changes
Amanda has a mixture of oil and water. She wants to remove most of the oil from the mixture. How?
A- use a magnet to attract the oil
B- pour the mixture through a sieve
C- stir the mixture until the oil dissolves
D - let the oil float to the top and skim it off
D - skim it off
The rate at which a solid dissolves in a liquid depends on many factors.
Which of these does NOT affect the rate?
A- temperature of the liquid
B- the size of the solid
C- whether or not it is stirred
D - the color of the solid
D - the color
Forces on an object that are equal in size and opposite in direction are _________
balanced forces
A model of an organism formed when sediment FILLS a mold and it hardens is a ______ fossil
cast fossil
Matter without a definite volume or a definite shape is called a(n)
What is a gas
An engineer is using a mixture of metals to make steel for the frame of a building. Which 2 properties should the steel have?
A- shiny and easy to shape
B - strong and slightly flexible
C- shiny and magnetic
D - magnetic and resistant to rust
B - strong and slightly flexible
Mason puts water, sugar and yeast into a balloon. He knows that the yeast will react with the water and sugar. He measures the mass of the balloon and contents and then puts it into a warm place for 2 hours. Then he measures the mass again. He repeats the experiment 3 times to get data.
How will the mass of the balloon change?
A - increase
B - decrease
C - stay the same
The mass will stay the same
A force that opposes motion and acts between two objects that are touching is __________
friction
An event that results in the dying off of many species is called _________________ (2 words)
Mass extinction