Biology Module 2
Match the term with the definition Mixture
A combination of substances without a chemical reaction
Match the term with the definition Smelt
A method of separating mixtures that depends on difference in melting points
Match the term with the definition Filtration
A method of separating mixtures that removes solids from liquids
Match the term with the definition Heterogenous
A mixture in which all of the particles are NOT evenly distributed
Match the term with the definition. Homogeneous
A mixture in which all of the particles are evenly distributed throughout the mixture
Match the term with the definition Evaporation
A phase change and a method of separating mixtures
Match the term with the definition Gas
A phase of matter in which there is NOT defined shape or volume
Match the term with the definition Solid
A phase of matter in which there is both defined shape and volume
Match the term with the definition. Liquid
A phase of matter with defined volume but NOT shape
Match the term with the definition Element
A pure substance; a material defined by the number of protons it possesses
The smallest particle of an element that still retains the characteristics of the element is called what?
Atom
The change happening to the egg in this picture is a ___________ change.
Chemical
The change happening while the cake in this picture is baking is a ___________ change.
Chemical
The rusting in this picture is a ___________ change.
Chemical
The stream of vinegar and baking soda mixture that is propelling the rocket in this picture is a ___________ change.
Chemical
___________ are combinations of two or more elements that have been combined chemically.
Compounds
What is the formula for density?
Density = Mass/volume
If you have two liquids with two different boiling points, which separation method would you use?
Distillation
A pure substance that cannot be broken down any further using physical or chemical methods is called what?
Element
Which separation method would you use to collect sea salt from the ocean?
Evaporation
Color is an ___________ property.
Intensive
Density is an ___________ property.
Intensive
Density is what kind of property?
Intensive
Temperature is an ___________ property.
Intensive
___________ have a varying composition and can be separated by physical means.
Mixtures
Look at the melting ice in this picture. This is a ___________ change.
Physical
Melting point is a ___________ property.
Physical
The change happening to the onions in this picture is a ___________ change.
Physical
The change involving the paper in this picture is ___________.
Physical
This picture shows the sublimation of dry ice. This change is ___________.
Physical
Volume is a ___________ property.
Physical
Which separation method would you use to purify gold?
Smelting
Match the term with the definition. Matter
Something that has mass and takes up space and volume
Which one of the following is NOT one of the four phases of matter?
Space
What is the density of carbon monoxide gas if the mass is 0.234 g and it occupies a measured space of 150 mL?
Your Answer: 0.234g / 150 mL = 0.0016
What is the mass of ethyl alcohol that fills a 250.0-mL graduated cylinder? The density of ethyl alcohol is 0.789 g/mL.
Your Answer: 250.0 mL*0.789g/mL = 197g
Find the mass of 275 mL of benzene if the density is 0.8786 g/mL.
Your Answer: 275 mL * 0.8786 g/mL = 242
The density of silver is 10.5 g/cm3. The mass is 3001 g. What is the volume?
Your Answer: 3001 g /10.5 g/cm^3 = 286 cm^3
A piece of metal with a mass of 31.5g is added to a graduated cylinder to calculate the volume. The water is initially at the 51 mark, and it rises to the 78 mark after the metal is added. What is the density of the metal?
Your Answer: 31.5/27 = 1.2 g/cm^3
Mercury is poured into a graduated cylinder that holds exactly 25.0 mL. The mercury has a mass of 320 g. Calculate the density. (Hint: Mercury is a liquid.)
Your Answer: 320g /25.0mL =12.8g/mL
A block of aluminum has a mass of 42 g and is measured to occupy a volume of 15 mL. Calculate the density.
Your Answer: 42 g / 15 mL = 2.8 g/cm^3
What is the mass of zinc if the density is 7.14 g/cm3 and the measured volume is 25.0 cm3?
Your Answer: 7.14 g/cm^3 * 25.0cm^3 =179 g
What is the density of sulfuric acid if the mass is 73.21 g and the measured volume is 45.0 mL?
Your Answer: 73.21 g / 45.0 mL = 1.63 g/mL
What is matter? Please answer in 1-2 full and complete sentences.
Your Answer: Matter is something with mass. It takes up space and volume.
What is the difference between mass and weight? Please answer in at least 2 full and complete sentences.
Your Answer: The difference between mass and weight is that mass is something that takes up space it does not change whether it is in space or on earth. Weight is dependent on how heavy or light the object is. The weight changes because of gravity.
In a few sentences, compare and contrast extensive and intensive properties. Please use proper grammar and mechanics.
Your Answer: The extensive property is what changes the amount of the substance. An intensive property is the amount of substance present. They are similar because they are both measuring something based on how much something is.
In a few sentences, compare and contrast physical and chemical properties. Please use proper grammar and mechanics.
Your Answer: They are both observable. Chemical properties should involve a chemical reaction to be seen. Physical can be seen by it appearance or state of matter.
Flammability is a ___________ property.
chemical