Vocab
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?
A substance containing 2 of the same atoms bonded together is called this.
What is a molecule?
A combination of 2 things in uniform composition
What is a solution/homogeneous mixture?
the amount of matter something has
What is mass?
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?
Five mL of ethanol has a mass of 3.9 g, and 5.0 mL of benzene has a mass of 44 g. Which liquid is denser?
What is benzene?
H20 (water) and CO2 (carbon dioxide) are examples of this as they are made up of different elements bonded together.
What is a compound?
Koolaid, steel, brass, air, and milk are examples of this.
What is a solution/homogeneous mixture?
The amount of space an object takes up.
What is Volume?
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?
A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper?
What is D = 8.96 g/cm3?
Chemical symbol for the element Copper
What is Cu?
Draw a particle diagram of a mixture of a compound and an element
(Should be individual elements and another group of more than 1 type of element bonded together)
this is the temperature at which a substance goes from a liquid to a gas
What is boiling point?
If enough heat is added to a liquid it become this state.
What is a gas?
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?
Chemical symbol for the element Oxygen
What is O?
This type of mixture is easy to separate back into its original components.
What is heterogeneous?
What is density?
When heat is added to a solid, it becomes this state of matter
What is a liquid?
Melting an ice cube is considered which type of change
What is a physical change?
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?
Type of pure substance that can be separated chemically?
What are compounds?
This type of mixture is more difficult to separate because you cannot see the individual pieces.
What is homogeneous?
A student has a mixture of water, sand, and iron filings. What techniques would the student use if they wanted to separate the sand and iron filings into pure substances? Choose all that apply.
What is all of the above?
If heat is removed, a liquid will become this state
What is a solid?
Burning wood would be considered which type of change
What is a chemical change?
What is the density of CO gas if 0.196 g occupies a volume of 100 ml?
What is the D = 0.00196 g/ml?
Aluminum, iron, carbon, neon, and calcium are examples of what
What are elements?
This type of mixture is the same throughout. Lemonade and milk are two examples of this.
What is a homogeneous mixture?
A pure substance that CANNOT be broken down chemically
What are elements?
the state of matter that has the most energy
What is a gas?
Flammability and reactivity are examples of this
What is chemical properties?
Silver has a density of 10.5 grams/cm3 and gold has a density of 19.3 g/cm3. Which would have the greater mass, 5cm3 of silver or 5cm3 of gold?
What is gold?
Draw a particle diagram of a compound
(Should be at least two different types of atoms bonded together)
This type of mixture is different throughout. Fruit salad and trail mix are examples of this.
What is a heterogeneous mixture?