Matter
Matter is anything that has ____________ and takes up ________________
mass, space (volume)
A physical combination of two or more substances is called a ______________
A mixture
Ripping a piece of paper is an example of a:
A) physical change
B)chemical change/reaction
A - a physical change
What are the 3 (normal) states of matter
Solids, Liquids, Gases
A banana turning brown is an example of what?
A) chemical change
B) physical change
A!
What is mass?
The measure of the amount of matter in an object.
A) Homogeneous
B) Heterogeneous
B! Heterogeneous
Write 2 examples of a chemical change
burning wood
mixing baking soda and vinegar
There are many more, so show your teacher your answers!
In this state of matter, the particles are stacked tightly and neatly on top of each other and vibrate together
Solids
wood splitting
boiling water
water changes to ice
(show other examples to your teacher)
What is volume?
The amount of space an object takes up. Or how large or small an object is
Mixing dirt into water is an example of a
A) colloid
B) suspension
C) solution
B, Suspension
Briefly describe the difference between chemical and physical changes.
With a physical change, you begin and end with the same matter, it just appears different.
With a chemical change/reaction, you end up with different types of matter than you started with.
What are the properties of a gas/
A) definite shape + definite volume
B) definite volume + indefinite shape
C) indefinite shape + indefinite volume
C!
A scientist who studies matter's physical and chemical properties and how different chemicals react together is called what?
A chemist
A characteristic of matter than can be observed and or measured is known as its ___________________
Physical Property
True or false: Creating a solution, like mixing salt and water, is an example of a chemical reaction.
False - it is only a physical change because you begin and end with the same types of matter you had before. They are only mixed together.
Write the 5 signs of a chemical change
2. change in odor (smell)
3. change in temperature
4. formation of a gas
5. formation of a solid
What happens to the particles in matter when you add energy (heat) to them?
A) They just get hotter
B) They begin moving more and spreading out
C) They stick closer together and vibrate
D) They change from a gas to a solid.
B!
Rebecca made a mixture of raisins, nuts, and dried fruit for a snack. What kind of mixture was Rebecca’s snack?
A) Solution
B) Colloid
C) Heterogeneous mixture
D) Suspension
Write down 4 physical properties of matter. (Spelling doesn't matter)
Write two examples of a colloid
foam, whipped cream, fog, airborne dust ( and many more so show your teacher)
This law states that matter is neither created nor destroyed during a physical change or chemical reaction. What is the name of this law? Also give an example or describe what it means.
The law of conservation of mass
It means that when a physical or chemical change takes place, you will still have the same amount of matter after.
For example: If I mix 200g of vinegar + 100g of baking soda (300g total). After the chemical reaction, I will have a total of 300g of matter if I weight the salt, water, and C02 that is created during the reaction.
Describe how the characteristics of a liquid is different/similar to a solid (shape, volume)
Also, draw a picture of what the particles of a solid and liquid look like.
Solids and liquids both have a definite volume, but liquids do not have a definite shape.
Show the teacher your drawings.
How is mass different from weight?
Mass is the measurement of how much matter an object has.
Weight is the force of gravity on an object.
Mass stays the same, but weight can change depending on the strength of gravity.