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89 terms

9th grade Science Final Exam

STUDY
PLAY
7
Pure water has a pH of ____.
Cyan, magenta, and yellow
The primary colors of pigment are?
Blue, green and red
The primary colors of light are?
Transparent
An object that allows all light to pass through is described as ______.
Pitch to decrease
Increasing the wavelength of a wave causes ________
Increasing wave frequencies
Red, orange, yellow and green are in order of _________.
Benzene ring structure
Aromatic hydrocarbons contain the ________.
Hydrocarbon
A compound that is made up of only Carbon and Hydrogen is called _____.
Semi Circular Canals
The ____ _____ _____ of your ear helps you maintain your balance.
Binary
An example of a ______ compound is NaF.
Air
Sound moves the slowest through____.
Transverse
A ________ wave causes the medium to move up and down at right angles
Salt Former
The word Halogen means "____ ____"
Alkali
____ means soft, silvery-white, shiny metals, highly reactive, and contain one valence electron.
Cobalt
______ is not a plating metal
Alkali
The _____ metals become more reactive as you go down the family.
Carbon
The _____ group contains the element that is the basis of light.
Noble gases
The elements that are least likely to react with other elements are the ____ ____.
Fluorine
The most reactive of all nonmetals is ______.
Magnesium
The element _______ is always found in nature combined with other elements.
Titanium
The least magnetic of cobalt, iron, nickel and titanium is _______.
18
The only group that is completely non-metallic is Group ____.
Ionic
An ______ bond would be formed between Lithium and Bromine.
Molecule
Covalent Bonds always result in the formation of a ___________.
Compound
Ionic bonds always result in the formation of a _______.
Transfer
A "________" of electrons best describes an ionic bond.
Astatine
______ is not diatomic
Seven
There are __________ diatomic atoms.
Polar
A molecule that doesn't share electrons equally is a ______ molecule.
Compound
NaCl is a _______.
Covalent
A bond formed between two nonmetals is a ________ bond.
Ion
A charged atom is called an ____.
Gained or lost
An ion is formed when electrons are ______ or ______.
Zero
The sum of oxidation numbers in a compound always equals ______.
Two
A binary compound is composed of _____ elements.
Mg3P2
The formula from a compound formed between Magnesium and Phosphorus is _____.
Fe2O3
_______ is the formula for Iron (III) Oxide.
Alkali Metals
The name of family #1 is ____ ____.
Neutral
Binary Compounds are ______.
Ca(OH)2
Formula for Calcium Hydroxide is ____.
Polyatomic Ion
A group of covalently bonded atoms that act as single atom when bonding is a _________.
Diatomic
Iodine, Chlorine, and Hydrogen are ______ elements.
Transition Metals
Families 3-12 are called the ___ ____.
Metals
______ are malleable, luster, and ductile
Francium
_______ is the most reactive metals.
Hydrogen
_______ is the most abundant element in the universe
Nitrogen
________ is the most abundant element in the atmosphere.
Transuranium elements
All elements after number 92 are called the _____ ______.
Iron (III) Phosphate
The correct name for FePO4 is ______.
Mg(NO3)2
The correct formula for Magnesium Nitrate is ______.
Radioactive elements
Elements that are unstable and break down quickly are ____ ______.
Sodium Hydroxide
NaOH is the formula for ____ _____.
Isomers.
Organic compounds that have the same chemical formula but different structures are called ______.
Carbon
Organic compounds contain the element ______.
Alkanes
Alkenes
Alkynes
_________ - single bond
__________ - double bond
__________- triple bond
Aromatic
Compounds containing the Benzene ring are called ______.
Law of Conservation of Mass
Antoine Lavoisier's major contribution to science was the _________.
Law of Conservation of Mass
We balance equations to satisfy the ____________.
Chemical equation
A _____ _____ is a series of symbols and formulas used to describe what takes place in a chemical reaction.
Ohms
Resistance is measured in ____.
Wet
A car battery is an example of a ___ cell.
I =V/R
According to Ohm's law _=_/_
V
Potential Difference
A
Current
W or kW
Electric Power
kWh
Electric energy
Resistance
Thickness, length, and temperature
Three factors affecting resistance
Acid
H3PO4 is a _____.
Donor
An acid is a proton ______.
Hydronium ions
Bases do not produce_____ ____ in a solution.
Salt and Water
The products of a neutralization reaction are _____ & ____.
7
pH values below ____ are acidic
Sulfuric Acid and Magnesium Hydroxide
______ and ______ will produce MgSO4 salt as a product.
Production of fertilizer
Sulfuric acid, Nitric acid, and Phosphoric acid are used in the ________.
Acids and Bases
_____ & _____ are both corrosive, react with indicators, and can cause severe burns.
Sour
Acids taste ______.
Transverse
Waves in which the medium moves at right angles to the direction of the wave energy are _______.
Chochlea
The part of the inner ear that aids in hearing is called the _______.
Hertz
Frequency is measured in _____.
20-20,000Hz
A healthy human ear can hear frequencies ranging between ___ -___.
_____ is the symbol for wavelength
Hammer, anvil, and stirrup
The three bones of the middle ear in order from the eardrum inwards are __?
Pitch
The highness and lowness of sound is the ______.
Solid
Sound travels fastest through a ____.
Ultrasonic
Frequencies too high pitched for human ears to hear are called _____.
Electrons
_________ are particles not found in the nucleus of an atom.
Nucleus
The mass of the atom is located in the _____.
Binary
A compound containing only 2 elements is called a _________ compound