If it has mass and takes up space (if it has mas and volume)
100
What is a physical property of matter?
A characteristic of matter that you can observe or measure WITHOUT changing the identity of the matter.
100
What is a physical change (definition)
A physical change is a change in size, shape, form, or state of matter in which the matter's IDENTITY STAYS THE SAME
100
What are chemical properties of matter (definition)?
A characteristic of matter than can be observed as it CHANGES to a different type of matter.
100
What is the difference between chemical properties of matter and physical properties of matter.
Physical properties are characteristics that don't change the identity of the substance while chemical is a characteristic that is observed when the matter changes into a different type of matter
200
What is the smallest building block of matter?
Atom!
200
What are the four states of matter in our universe?
Solid, Liquid, Gas, and Plasma
200
Is dissolving one substance into another a physical change, or a chemical change?
(Can you your reverse this process to get both substances again? Think of examples used in class)
It is a physical change.
Like dissolving salt in water. It becomes a homogeneous solution but can be boiled to separate both salt and water again
200
What are some signs that a chemical change has occured to a particular substance
(think of fire as an example)
Some signs include a change in color as in rust, in energy as in fire, in order, and the formation of bubbles/gas that forms a NEW substance
200
What are the two sides of a chemical equation called
Reactants and products
300
What is the structure of an atom (What is it made of?)
Proton ands Neutrons (nucleus) and Elections (electron cloud)
300
What are at least two examples of a size-dependent (extensive) property of matter?
Mass and volume
300
What is another term used for homogeneous mixture?
Solution
300
Balance the following equation:
____Fe + ____O2 ---->____Fe2O3
4Fe + 3O2----> 2Fe2O3
300
What is the only thing you can change in a chemical equation in order to balance it out
Coefficients
400
What is the definition of a substance? What is a mixture? How do they differ?
Substance is matter with a composition that is always the same
A mixture is matter that can vary in is compostion
400
What are at least two examples of a size-independent (intensive) property of matter?
What happens when you add thermal energy to ice? What is happening to the particles off ice as more heat is added?
The ice reaches melting point and melts to liquid water; the particles of the ice become more energized and begin to move faster.
400
Balance the following equation:
__FeS2 + __O2 ---> __Fe2O3 + __SO2
4FeS2 + 1202 ----> 2Fe2O3 + 8SO2
400
Balance the following equation:
___HgO ---> ____Hg +____ O2
2HgO ----> 2Hg + 1O2
500
What is an element? What is a compound? What is the difference between the them
An element is a substance that consists of only one type of atom (in its purest form). A compound however consists of two or more different atoms chemically bonded together.
Can a molecule only be a compound?
500
A piece of copper (Cu) has a volume of 100.0 cm^3. If the mass of the copper is 890 grams, what is the density of the copper?
Density = m/v
Density= 890 g/ 100 cm^3= 8.9 g/cm^3
500
Describe the concept of Conservation of Mass. Give an example/
The total mass of a substance before and after a change is always the same. This is known as the conservation of mass. Examples vary
500
HARD:
What factors increase the rate of a chemical reaction? Give example of at least two of these factors.
(turn to page 378 for help)
Temperature (cooking); Concentration (acid); Surface area
500
You have water in a graduated cylinder that measures a initial volume of 30 ml. You than add a irregular piece of metal that increases the water level in the cylinder to 50 ml (final volume). The piece of metal has a mass of 40 grams.
What is the density of the metal? Make sure to simplify and label units.
Volume (final) - Volume (initial) = Volume of metal
50 ml - 30 ml = 20 ml
Mass of metal = 40 g
Density = m/v => density of metal is 40g/20 ml => 2g/ml