a pure substance that cannot be broken down into any other substances by chemical or physical means
What is an element?
100
a single kind of matter that is pure, meaning it always has a specific makeup-or composition-and a specific set of properties.
What is a substance?
100
Density=_________
Mass/Volume
100
any change that alters the form or apperance of matter but does not make any substance in the matter into a different substance.
What is physical change?
100
The energy of electrically charged particles moving from one place to another.
What is Electrical Energy?
200
Name two ways of seperating a mixture.
- Using a Magnet
- Filtering a Mixture
- Dictilling a liquid solution
- Evaporation
200
anything that has mass and takes up space
What is matter?
200
A pineapple has a mass of about 1,600 g. What is the equivalent mass in kilograms.
1.6 kg
200
Define Chemical Change.
A change in matter that produces one or more new substances.
200
Is this Kinetic or Potential Energy?
-The energy an object has because of its position.
Potential Energy
300
In a ________ you can see the different parts.
In a ________ you cannot see the different parts.
-Heterogeneous Mixture
-Homogeneous Mixture
300
Texture & Color, and Flexibility are examples of _________.
Physical Properties
300
Find the rectangle's volume.
-Length: 20 cm
-Heigth: 7 cm
-Width: 9 cm
1260 centimeters cubed
300
What chemical change is this?
- When Natural Gas, Wood, Candle Wax, and Gasoline burn in the air.
What is Combustion?
300
True or False? If false, correct the statement.
-Electrodes are 3 metal strips that are placed in a mixture and the elctrodes touch.
-Electrodes are 2 metal strips that are placed in a solution, but the electrodes do not touch.
400
A pure substance made of two or more elements chemically combined in a set ratio.
What is a compound?
400
True or False?
-Eggs and Flour are not substances.
-Table Salt and Sugar are subtances.
-True
-True
400
Define Weight.
A measure of the force of gravity on you.
400
How much mass is lost when burning methane?
When atoms burn, do they stay the same?
-None
-No, it doesn't stay the same, it just rearranges.
400
Define Electromagnetic Energy.
A form of energy that travels through space waves.
500
When atoms combine they form a ________, which is a __________.
When atoms combine they form a **chemical bond** which is a **force of attraction between two atoms**
500
Define Chemical Property.
A characteristic of a pure substance that describes its ability to change into different sunstances.
500
Find the Density.
- Mass: 600 g
- Volume: 30 cm cubed
20 g/cm cubed
500
Is this Physical Change?
-Bending, Breaking, chopping, crushing, and other things that change shape or form.
Yes, It is Physical Change.
500
During a chemical change, chemical energy may be changed to _________. Other forms of energy may also be changed to ___________.
During chemical change, chemical energy may be changed to ** other forms of energy**. Other forms of energy may also be changed to ** chemical energy**.