General Chemisty QA
What is matter?
Something that occupies space but has no mass
Anything that occupies space and has mass
Something that has mass but no volume
Anything that has volume but no mass
What are the small particles that make up matter?
Molecules
Compounds
Atoms
Protons
Which of the following is NOT a classification of matter based on origin?
Organic Materials
Inorganic Materials
Synthetic Materials
Compound Materials
Which state of matter has a definte shape and volume?
Liquid
Gas
Solid
Plasma
What type of matter assumes the shape of its container?
Solid
Liquid
Gas
Plasma
Which type of matter has neither a defnite volume nor a definite shape?
Solid
Liquid
Gas
Plasma
What is plasma?
A rare type of solid
A type of liquid
A highly ionized gas
A type of organic material
Which of the following is classified as an element?
Water (H2O)
Oxygen (O2)
Carbon dioxide (CO2)
Sodium chloride (NaCl)
What is a compound?
A chemical combination of various elements
A pure substance with a fixed composition
A pure substance with a fixed composition
A substance with no unique properties
Which of the following is NOT a compound?
Sucrose
Sodium chloride
Hydrochloric acid
Copper
Which type of mixture is also called a solution?
Homogeneous mixture
Heterogeneous mixture
Compound mixture
Inorganic mixture
What are physical properties?
Properties that depend on the amount of matter
Properties that can only be observed with a microscope
Properties that change the composition of matter
Properties that can be observed and measured without changing composition
Which of the following is a physical intensive property?
Mass
Volume
Shape
Length
Which of the following is a chemical property?
Density
Boiling point
Ability to rust
Transparency
Which property of matter is characterized by its ability to transmit light without scattering?
Density
Melting Point
Transparency
Odor
What is the ability of a substance to break down or decomposed over time called?
Density
Reactivity
Ability to decay
Flammability
Which of the following is a chemical change?
Ice melting into water
Water burning intro steam
Wood burning into ash
Sugar dissolving in water
Which type of matter turns red litmus paper to blue?
Acid
Base
Salt
Compound
Which classification of matter includes carbon, hydrogen, oxygen, and sulfur?
Organic Materials
Inorganic Materials
Acidic Materials
Base Materials
What is the principle positive intracellular ion in the human body?
Sodium (Na)
Potassium (K)
Calcium (Ca)
Iron (Fe)
Which of the following is a trace element required in human nutrition?
Oxygen (O)
Sodium (Na)
Iodine (I)
Carbon (C)
What is the ability of a metal to be hammered or shaped into thin sheets without breaking called?
Density
Reactivity
Transparency
Malleability
What is the composition of a homogeneous mixture?
Two or more phases
One phase only
It depends on the substance
It cannot be determined
Which state of matter has particles that are relatively far apart and easily compressible?
Solid
Liquid
Gas
Plasma
Which type of matter has a definite volume but no definite shape?
Solid
Liquid
Gas
Plasma
What type of mastter has definite shape and volume?
Solid
Liquid
Gas
Plasma
Which of the following is NOT an extensive physical property?
Volume
Mass
Density
Color
Which classification of matter includes compounds like salt (NaCl) and carbon dioxide (CO2)?
Organic Materials
Inorganic Materials
Acidic Materials
Base Materials
What is the principal negative ion in the human body?
Sodium (Na)
Potassium (K)
Chlorine (Cl)
Calcium (Ca)
Which type of matter is commonly derived from nonliving things and does not contain carbon-hydrogen bonds?
Organic Materials
Inorganic Materials
Acidic Materials
Base Materials
How is plasma formed?
Plasma is formed by heating gas to extremely high temperature
Plasma is formed by exposing gas to low temperatures
Plasma is formed by applying pressure to gas
Plasma is formed by mixing gas with a liquid
What is used for bones and teeth, required for the formation of ATP
Potassium (K)
Phosphorus (P)
Calcium (Ca)
Chlorine (Cl)
What is a compound that donates H+ in a aqueous solution
Acid
Base
Salt
Compound
What can be seperated by simple mechanical means?
Compounds
Mixtures
Elements
Substances
What is the amount of space occupied by a substance?
Mass
Shape
Volume
Length
What is the process of separating mixtures consist of a nonvolatile solid and a volatile liquid?
Decantation
Distillation
Evaporation
Chromatography
What is the eparation of a mixture's components into two solvent phases of different densities?
Magnetic Seperation
Sublimation
Separatory Funnel
Decantation
What is the process of separating mixture consist of a substance which can be transformed from a solid states to a gaseous states?
Decantation
Magnetic Separation
Distillation
Sublimation
What is defined as the closeness of measurements within a set of data to one another
Accuracy
Precision
Errors
Imprecisions
What is caused by random variation such as slight changes in pressure?
Random Errors
Imprecisions
Human Interpretation
Systematic Error
What is the number that is equal to or more than one but less than ten
Coefficient
Base
Exponent
Subscript
Which is NOT a rule in determining significant figures
All nonzero digits are significant
Zeros to the right of the first nonzero are significant
Zeros at the end of a nonzero digit without a decimal point are not significant
Zeros between nonzero digits are significant
What operation states that the number of decimal places in the answer should be the same as the number with the least decimal places
Addition
Division
Multiplication
Subtraction
Convert to scientific notation (2450060000)
2.45 x 10^7
2.45006 x 10^4
2.45006 x 10^-4
0.245006 x 10^6
How many significant sigures (2450060000)
7
6
5
4
Which of the following formulas are correct
D = M x V
M = D x V
V = D / M
D = V / M
What is the meaning of the word "atom"?
Unchangable
Indivisible
Elemental
Small Particle
Who proposed the concept of atoms being indivisible particles?
Aristotle
Democritus
Dalton
Lavoisier
Which law states that mass is neither created nor destroyed in chemical reactions?
Law of Conservation of Mass
Law of Definite Proportion
Law of Multiple Proportions
Law of Atomic Mass
Who formulated the Law of Conservation of Mass?
Antoine Lavoisier
Joseph Proust
John Dalton
Democritus
Who formulated the Law of Conservation of Mass?
Antoine Lavoisier
Joseph Proust
John Dalton
Democritus
Which law states that a given compound will always be composed of the same elements in the same proportions by mass?
Law of Conservation of Mass
Law of Definite Proportions
Law of Multiple Proportions
Law of Atomic Mass
Who is associated with the Law of Definite Proportion?
Antoine Lavoisier
Joseph Proust
John Dalton
Democritus
According to Dalton's Atomic Theory, what are compounds formed from?
Atoms of the same element
Atoms of different element
Molecules
Ions
According to Dalton's Atomic Theory, what happens to atoms during a chemical reaction?
Atoms are created
Atoms are destroyed
Atoms rearrange
Atoms combine to form molecules
What are the three basic subatomic particles found in atoms?
Electrons, neutrons, and protons
Electrons, photons, and positrons
Electrons, ions, and protons
Electrons, quarks, and photons
Where are protons and neutrons located within an atom?
In the electron shell
In the nucleus
In the electron clouds
In the electron orbitals
Which subatomic particle has a positive charge?
Electron
Neutron
Proton
Photons
What is the charge of neutrons?
Positive (+1)
Negative (-1)
Neutral (0)
Variable
In which region of the atom are electrons found?
Nucleus
Electron shells
Electron clouds
Electron clouds
What is the mass unit (AMU) of a proton?
1.0073
1.0087
0.0005
0.0001
What does the atomic number represent?
NUmber of protons
Number of electrons
Number of neutrons
Total mass of the atom
If an atom is neutral, what can you say about the number of protons and electrons?
They are equal.
Protons are greater than electrons
Protons are greater than electrons
It depends on the element.
What does the mass number of an atom indicate?
The number of protons only
The number of electrons only
The total number of protons and neutrons
The total number of protons and neutrons
Isotopes are atoms of the same element with the same atomic number but different:
Number of electrons
Number of protons
Number of neutrons
Number of electrons and protons
What is the application of Carbon-14 in research?
Determining the age of artifacts in archaeology
Studying plant photosynthesis
Medical imaging of the brain
Medical imaging of the brain
Which radioactive isotope is used to locate brain tumors and monitor cardiac, liver, and thyroid activity?
Carbon-14
Phosphorus-32
Iodine-131
Cobalt-60
What is the term for a group of atoms chemically bonded together?
Molecule
Atom
Ion
Nucleus
What is an ion?
A molecule with a net positive charge
A molecule with a net negative charge
An atom with a net charge
A molecule that is neutral
What are atoms of the same element?
Hoteronucleus
Homonucleus
Heteronuclear
Homonuclear
Which type of molecule contains three or more atoms?
Diatomic molecule
Polyatomic molecule
Homonuclear molecule
Heteronuclear molecule
What indicates how the atoms are arranged and bonded chemically
Chemical Formula
Structural Formula
Molecular Formula
Empirical Formula
Who developed tools to see atoms in action?
John Dalton
Ahmed Zewail
James Watson
Francis Crick
What chemical reaction is seen when a reactant is broken down into two or more substances
Decomposition
Combination
Substitution
Metathesis
What depicts the atoms of the compound using spheres that are joined together, approximating the proportionate sizes of the atom
Plum Pudding Model
Ball-and-stick Model
Space-filling Model
Nuclear Atom Model
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