Chemistry Unit 1 Exam
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This is in preparation of the Chemistry Final Exam through Northwestern. . It's just Unit 1, but asks very detailed questions, so make sure you studied! Enjoy!
- 1.
- A.
The branch of science concerned with the nature and properties of matter and energy
- B.
The study of living organisms, divided into many specialized fields.
- C.
The science that deals with materials of the universe and the changes that these materials undergo
- D.
The intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural phenomenons.
- 2.Wood burning in air, forming water, carbon dioxide, and other substances is a form of chemistry.
- A.
True
- B.
False
- 3.What are the steps to the scientific method?
- 4.What is a theory?
- A.
Something that is witnessed and can be recorded.
- B.
An interpretation, or a possible explanation of why nature behaves in a particular way.
- C.
A statement that summarizes generally observed behavior.
- D.
A possible explanation for an observation.
- 5.What is matter?
- A.
Something that has mass and occupies space.
- B.
Fundamental unit of which elements are made.
- C.
Substances that contain only one type of atom.
- D.
Substances that are made by bonding atoms together in a specific way.
- 6.What are compounds? What are elements?
- 7.Check the 3 different types of states of matter.
- A.
Solid
- B.
Water
- C.
Liquid
- D.
Blood
- E.
Gas
- 8.A chemical property is a characteristic that describes the ability of a subtsance to change to a different substance.
- A.
True
- B.
False
- 9.
- 10.What is a mixture?
- A.
A substance without variable composition
- B.
A substance with variable composition
- 11.An alloy is a mixture of elements that have a metallic property.
- A.
True
- B.
False
- 12.A pure substance is a...
- A.
Pure element or pure compound
- B.
A mixture of elements
- C.
A mixture of atoms
- D.
Nitrogen.
- 13.What is the difference between a homogeneous and a heterogeneous mixture?
- 14.What is filtration?
- A.
A separation process that depends on the boiling points of the substances
- B.
An agent that is used to distillate water
- C.
Separation of a solid from a liquid by using filter paper
- D.
Desalination
- 15.What is the element symbol for fluorine?
- A.
Fl
- B.
Fo
- C.
Fe
- D.
F
- 16.What is the law of constant composition?
- A.
A given compound always contains elements in exactly the same proportion by mass
- B.
The fact that a substance made of two or more different elements joined together in a specific way is called a compound
- C.
Elements are made up of tiny particles called atoms
- 17.J.J Thompson found what neutrons were.
- A.
True
- B.
False
- 18.
- A.
The number of protons in the nucleus of a given atom
- B.
The total number of protons and neutrons in the nucleus of a given atom
- C.
Atoms with the same number of protons but different number of neutrons
- D.
The number of electrons in the nucleus of a given atom
- 19.In the periodic table, the following groups exist
- A.
Alkaline
- B.
Alkali
- C.
Helenogens
- D.
Halogens
- E.
Ignoble Gases
- F.
Noble Gases
- 20.What properties of elements are considered when arranging elements in the periodic table?
- 21.The four physical properties of the metals include...
- A.
Efficient conduction of heat and electricity
- B.
Ability to be eaten (edible)
- C.
Malleability (can be hammered into thin sheets)
- D.
Ability to change in state of matter
- E.
Lacking shininess (luster)
- F.
A lustrous appearance
- G.
Ductility (can be pulled into thin wires)
- 22.A diatomic molecule a molecule that consists of three atoms.
- A.
True
- B.
False
- 23.Describe what cations, anions, and ions are in general.
- 24.Chemical compounds must have a ______ charge
- A.
Positive
- B.
Negative
- C.
Neutral
- 25.A binary ionic compound is a two element compound consisting of an anion and a cation.
- A.
True
- B.
False
- 26.What is a scientific notation?
- A.
Expresses as a product of a number between 1 and 10 and the approximate power of 10.
- B.
It is the notation of science
- 27.Units are the part of the measurement telling us the scale being used
- A.
True
- B.
False
- 28.What are the different ways to measure length, volume, and mass
- 29.Significant figures are the certain digits and the last uncertain digit of a measurement
- A.
True
- B.
False
- 30.Conversion factors are
- A.
The relationship between inches and centimeters
- B.
The proportion that is used to measure the ratios of food
- C.
A ratio used to convert from one unit to another
- D.
The process of using conversion factors to change from one unit to another
- 31.The absolute scale of temperature is
- A.
Kelvin scale
- B.
Celsius scale
- C.
Fahrenheit scale
- 32.In order to convert from celsius to kelvin degrees, one must add 200 degrees to the celcius degree.
- A.
True
- B.
False
- 33.Describe what density is
- 34.What is the chemical formula of the phosphate ion?
- 35.Chemical formula for hydroxide ion.
- 36.Cesium oxide
- 37.Barium oxide
- 38.What is the chemical formula for scandium oxide?
- 39.What is the chemical formula for the nitrite ion?
- 40.What is the formula for a carbonate ion?
- 41.What is the chemical formula for the nitrate ion?
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