Mid term Exam Flashcards
What is the study of substances and the changes they undergo?
a. Zoology
b. Biology
c. Chemistry
c. Chemistry
What is the Chemistry that studies all substances WITHOUT carbon?
a. Organic
b. Inorganic
c. Biochemistry
b. inorganic
What is a means of testing a hypothesis?
a. experiment
b. scientific law
c. data collection
a. experiment
What is matter that flows and has a definite volume but NOT a definite shape?
a. Solid
b. Liquid
c. gas
b. liquid
What are the building blocks of elements?
a. atoms
b. ions
c. formula units
a. atoms
What is the matter with a definite shape and a definite volume?
a. solid
b. liquid
c. gas
a. solid
What type of matter does NOT have a definite shape or volume?
a. solid
b. liquid
c. gas
c. gas
What kind of mixture looks the same throughout?
a. homogeneous
b. heterogeneous
c. liquid
a. homogeneous
What is another name for a homogeneous mixture?
a. compound
b. element
c. solution
c. solution
What is the term for an atom that has lost or gained an electron?
a. cation
b. anion
c. ion
c. ion
What is the name for a negatively charged ion?
a. electron
b. cation
c. anion
c. anion
What is the name for a Positively charged ion?
a. anion
b. cation
c. positron
b. cation
Electrons orbit a dense, positively charged center called?
a. central point
b. proton
c. nucleus
c. nucleus
What is the name of the scientist who discovered the positively charged nucleus?
a. Dalton
b. Rutherford
c. Bohr
b. Rutherford
What are spheres that have no charge and are located in the nucleus?
a. protons
b. electrons
c. neutrons
c. neutrons
What are atoms of the same element but with different numbers of neutrons?
a. reactants
b. isotopes
c. valence electrons
b. isotopes
What are long chains of Carbon and Hydrogen bonded together called?
a. hydrocarbons
b. polymers
c. carbogens
a. hydrocarbons
What is another name for a line spectrum?
a. continuous spectrum
b. atomic emission spectrum
b. atomic emission spectrum
What is the name of the spectrum which allows you to see all the colors, and they BLEND into each other?
a. continuous spectrum
b. line spectrum
c. electromagnetic spectrum
a. continuous spectrum
What do we call the colors you can see?
a. infrared
b. visible light
c. radar
b. visible light
What is the name for the device used to separate the light into separate wavelengths?
a. Geiger counter
b. Diffraction Grating
c. Film Badge
b. Diffraction Grating
What is Distance from the origin of the wave to the top of it?
a. wavelength
b. amplitude
c. origin
b. amplitude
What is the term fro an amount of waves that pass a specific point in a certain amount of time?
a. frequency
b. crest
c. trough
a. frequency
What is the lowest point on a wave called?
a. Amplitude
b. trough
c. crest
b. trough
What is the name of the place where the wave starts?
a. origin
b. destination
c. amplitude
a. origin
What are waves used in cooking your food?
a. radio
b. microwaves
c. ultra violet
b. microwaves
What are the waves that are used to take pictures of your bones?
a. x-rays
b. gamma
c. radar
a. x-rays
What is the type of radiation that is made of fast moving electrons with a negative charge?
a. alpha
b. beta
c. gamma
b. beta
What is the smallest and strongest type of radiation which can only be stopped by lead?
a. alpha
b. beta
c. gamma
c. gamma
What is a relatively constant level of radiation known as?
a. Background radiation
b. REM
c. gray
a. background radiation
When an unstable nucleus loses energy by emitting radiation what do we call this process?
a. nuclear waste
b. radioactive decay
c. mutations
b. radioactive decay
What are changes in the structure of DNA that may result in production of altered proteins?
a. Fission
b. cancer
c. mutation
c. mutation
What type of radiation has a positive charge and is the largest?
a. alpha
b. beta
c. gamma
a. alpha
What type of cancer affects the white blood cells and is caused by exposure to high amounts of ionization energy?
a. Leukemia
b. Breast Cancer
c. Thyroid Cancer
a. Leukemia
When the nucleus of an isotope is bombarded by neutrons splitting the nucleus into smaller fragments is known as?
a. fusion
b. fission
b. fission
In nuclear chemistry what are used to slow down neutrons so they can be captured by the reactor fuel to continue the chain reaction?
a. water
b. control rods
c. steam
b. control rods
What is the place where all known elements are located?
a. periodic table
b. index
c. earth’s core
a. periodic table
What are the vertical columns of the periodic table called?
a. group
b. periods
c. law
a. groups
What is the name for elements with a full valance shell?
a. Halogens
b. Noble gases
c. Earth metals
b. Noble gases
What is the name for the horizontal rows of the periodic table?
a. rows
b. groups
c. periods
c. periods
What is the term for a group of atoms that act as one and carries a charge?
a. halogens
b. polyatomic ion
c. metals
b. polyatomic ion
What is a combination of 2 or more chemicals that cannot be broken down by physical means?
a. compound
b. solution
c. mixture
a. compound
What are the forces that hold a molecule together called?
a. inter molecular forces
b. ionic bonds
c. covalent bonds
a. inter molecular forces
What is a liquid’s resistance to flow?
a. resistance measure
b. viscosity
b. viscostiy
What is the average mass of all the isotopes of that particular element known as?
a. atomic mass
b. atomic weight
c. atomic number
b. atomic weight
What is the process that separates ores based on the different boiling points?
a. combustion
b. fusion
c. fractional distillation
c. fractional distillation
What is the name for the bond where electrons are transferred to another atom?
a. ionic
b. covalent
c. hydrogen
a. ionic
Elements that have properties of both metals and nonmetals are known as?
a. mixtures
b. transition metals
c. metalloids
c. metalloids
A space where no particles of matter exist is called:
a. vacuum
b. diffraction grating
c. cathode ray
a. vacuum
When a liquid changes to a gas below its boiling point is known as:
a. respiration
b. condensation
c. evaporation
c. evaporation
HCFC, carbon diozide, water vapor, CFC and methane are examples of
a. ozone
b. acid rain
c. green house gases
c. green house gases
The layer of the atmosphere where we live - 6 miles up and where weather takes place?
a. Mesosphere
b. Stratosphere
c. Trophosphere
c. Trophosphere
When light strikes an object and it reflects it back without heating up is known as?
a. reflectivity
b. heat capacity
c. outwar flow
a. reflectivity
Which of these examples is a physical change?
a. freezing and melting
b. boiling and condensing
c. Both a and b
c. both a and b
A chemical change occurs when a piece of wood?
a. splits
b. is painted
c. decays
c. decays
What is the chemical symbol for sodium?
a. S
b. Na
c. SO
b. Na
if you had to separate a mixture of alcohol and water you would?
a. use a filter
b. set it on fire
c. use distillation
c. use distillation
Which of the following is an example of a chemical change?
a. slicing cheese
b. rotting meat
c. freezing water
b. rotting meat
Which of the following is a compound?
a. water
b. oxygen
c. carbon
a. water
Which of the following is different in isotopes of the same atom?
a. protons
b. Neutrons
c. Electrons
b. Neutrons
White light produces what type of spectrum?
a. rainbows
b. continuous spectrum
c. line spectrum
b. continuous spectrum
The distance between the crest of one wave to the crest on the next is called?
a. trough
b. wavelength
c. origin
b. wavelength
The lowest point on a wave is called ?
a. trough
b. crest
c. wavelength
a. trough
Line spectra are produced when you look at what type of light?
a. neon light
b. white light
c. Black light
a. neon light
How many electrons do the third shell holds?
a. 4
b. 6
c. 8
c. 8
What kind of process is evaporation?
a. Heating
b. cooling
c. Fast
b. Cooling
The average temperature of the earth will ______ if we did not have green house gases?
a. increase
b. decrease
b. decrease
Photosynthesis and respiration are:
a. same
b. opposite
c. create oxygen
b. opposites
Petroleum is mostly used for:
a. building
b. explosives
c. burning
c. burning
How are the compounds of petroleum separated by fractional distillation?
a. Mass
b. boiling point
c. color
b. boiling point
The compounds with the _____ boiling points go to the top of the distillation tower.
a. lowest
b. Highest
a. lowest
What is the substance called that does not boil?
a. gas
b. bottoms
c. kerosene
b. bottoms
Fractions of the distillation process are used for the following except.
a. paper
b. heating fuel
c. plastics
a. paper
The higher the boiling point the intermolecular force between atoms are
a. lower
b. higher
c. zero
b. higher
A substance with a high viscosity will flow?
a. fast
b. slow
c. same
b. slow
How many electrons are in the first shell?
a. 2
b. 4
c. 8
a. 2
How many electrons are in the second shell?
a. 2
b. 4
c. 8
c. 8
A substance with a low viscosity will flow
a. fast
b. slow
c. same
a. fast
Which of the following is NOT a green house gas?
a. water vapor
b. Methane
c. Oxygen
c. Oxygen
Know the 4 signs that a chemical reaction my have occurred?
- forms precipitate
- forms bubbles
- changes color
- changes temperature
Draw and label the layers of the atmosphere
See Mrs. Krumpelman for help
Draw the electron Dot configuration for 4 elements
See Mrs. Krumpelman for help
