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anything that has mass and takes up space
What is matter?
This substance has a definite shape and define volume.
What is a soild?
This results in a new substance and is permanently changed
What is a Chemical change?
A sample of iron has the same dimensions of 2 cm x 3 cm x 2 cm. If the mass of this rectangular-shaped object is 94 g, what is the density of iron?
What is D = 7.83 g/cm3?
Iron (Fe) can be found on the periodic table. Iron is an example of a ______
Element
The periodic table is made up of mainly?
metals
Burning paper is an example of
Chemical change
This has no definite shape, but does have a definite volume
What is a Liquid?
A change in matter that involves a change in a physical property but doesn't create a new substance
What is Physical change?
The density of a substance is 1.63 grams per milliliter. What is the mass of 0.25 liters of the substance in grams?
M= 0.4075
H20 (water) and CO2 (carbon dioxide) are examples of this as they are made up of different elements bonded together.
What is a compound?
How many main groups does the periodic table have?
8
Convert 25 grams to kilograms
0.025 kg
Atoms packed closely together in this state and they have high density
What is a solid?
A property that can be observed only by performing a chemical change
What is a chemical property?
The density of pure solid copper is 8.94 grams per milliliter. What volume does 5 kilograms of copper occupy?
V= 0.56
This type of mixture is different throughout. Fruit salad and granite are examples of this.
What is a heterogeneous mixture?
How can you determine the number of valence electrons an element has?
Main group number
this is the relationship between mass and volume
What is density?
When a substance changes from a solid to a liquid, it has
A phase change is this type of change
What are physical changes?
An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2 ml. The height of the water rose to 7 ml. If the mass of the stone was 25 g, what was its density?
What is D = 5 g/ml?
Vinegar is a liquid mixture of both CH3CO2H and H2O but no chemical reaction occurs when mixed. Vinegar is an example of a ______
Homogeneous mixture
What is the name of main group 7?
Halogens
What are the three ways to transfer thermal energy?
Conduction, convection, and radiation
As heat is applied to a particular substance, which best describes what happens to the particles?
The particles begin to speed up and spread out
Flammability and reactivity are examples of this
What is chemical properties?
A block of wood 3 cm on each side has a mass of 27 g. What is the density of the block?
What is D = 1 g/cm3?
Pure substances have _________ AND __________ composition
What is uniform and definite?
Name main group 8 and the amount of valence electrons it holds
Noble gases and 8 valence electrons