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WorksheetsCHEMISTRY DIAGNOSTIC TEST
Total questions: 65
Worksheet time: 1hrs 5mins
What are the 3 basic subatomic particles?
Proton, electrode, neutron
Photon, electrode, neutron
Proton, electron, neutron
Proton, electron, neutrode
The process of evaporation occurs when a substance goes from
Liquid to solid
Solid to gas
Liquid to gas
Solid to liquid
The process of filtration is commonly used to separate
Solids from liquids
Liquids from liquids
Gases from liquids
An endothermic reaction is a chemical reaction that requires energy of any form to take place. Which of the following biological reactions is endothermic?
Digestion
Cellular respiration
Photosynthesis
The temperature at which a substance changes from liquid to gas is called...
Melting point
Boiling point
Flash point
Gas point
How do 2 objects of the same charge interact?
They attract each other
They repel each other
They don't interact
What is the name of the compound we commonly know as "salt"?
Sodium
Sodium chloride
Chloride sodium
It is everything that has mass and volume
Compound
Atom
Matter
Element
A compound is a combination of 2 or more
Atoms
Elements
Electrons
Protons
A decomposition reaction involves breaking down a complex substance into simpler parts. Which of the following biological reactions is a decomposition reaction?
Photosynthesis
Digestion
Respiration
What is the name of the positively (+) charged particle in the atom?
Electron
Proton
Neutron
Photon
What is the name of the negatively (-) charged particle in the atom?
Proton
Electron
Neutron
Photon
If an object GAINS electrons, which of the following statements is true?
The overall charge of the object is more positive
The overall charge of the object is more negative
The overall charge of the object remains unchanged
What is Chemistry?
The science of change
The science of life
The science of motion
The science of social interactions
Anything that takes up space and has mass is known as _______________.
Matter
Molecules
Compounds
Atom
The nucleus of an atom is made up of...
Protons and Neutrons
Neutrons and Electrons
Protons and Electrons
A(n) ____________________ is a pure substance made of a single type of atom and cannot be broken down.
Element
Compound
Molecule
Mixture
What does the ATOMIC MASS tell us about an atom?
Protons + Neutrons
Protons + Electrons
Neutrons + Electrons
What is an element?
Two or more atoms joined together.
One of over 100 types of atoms
Two or more different elements joined together.
A particle with no charge found in the nucleus of an atom.
What is a molecule?
two elements bonded together (sharing electrons)
a mixture of different substances
smallest individual particles
salt mixed in water
What is a compound?
the simplest form of a substance
a combination of 2 or more elements
a combination only of 3 elements
Two substances stuck together with glue.
What two subatomic particles are found in the nucleus?
proton and electron
electron and neutron
neutron and proton
neutron and electron
Which of the following statements regarding subatomic particles is incorrect?
Protons are positively charged particles and neutrons have no charge
In a neutral atom, the number of protons equals the number of electrons
The relative mass of proton, electron and neutron the same
Isotopes of an elements have the same number of protons but a different number of neutrons
The most common chemicals used in our daily life is table salt. What is the chemical term for the table salt?
potassium oxide
potassium chloride
sodium chloride
sodium oxide
The melting point and boiling point of substance M is -37oC and 5oC respectively. The physical state of substance M at room temperature is
gas
solid
liquid
gas and liquid
A solution consists of two parts. One part is the substance that is dissolved. What is the name of this part of a solution?
solvent
solute
solution
oxygen
A solute is the substance being dissolved.
The solvent is....
the dissolving medium
the solute particel
the gas medium
the solution medium
When liquids are mixed, the liquid present
in the largest amount is called ...
solution
solvent
solute
concentrated
Molarity is...
moles of solute in 1 liters of solvent
moles of solvent in 1 liters of solute
moles of solute in 1 liters of solution
moles of solute in 1 moles of solution
from the following solutions, the ionic solution is...
C6H12O6
CHCl3
NaCl
CO(NH2)2
Homogeneous mixtures is also called ___________________
Solution
Compounds
Elements
Solvent
What do you call the ability of substances to be dissolved in a solvent?
Density
Cohesion
Melting
Solubility
It is a process used to separate components of mixture that have different sizes using a filter paper.
Evaporation
Filtration
Distillation
Decantation
What do we call a mixture of two or more metals?
Alloy
Concrete
Mud
Karat
They are important gases that keep the Earth warm by trapping the heat coming from the sun?
Chlorofluorocarbons
Greenhouse gases
Noble Gases
Inert Gases
A pure substance cannot be separated through physical means.
True
False
Mixtures have no uniform composition
True
False
This is a type of mixture where one substance dissolves into another
Solution
Miscibility
Compound
Solubility
____________ is the process whereby particles of a solvent completely surround the particles of a solute, disperse them throughout the solvent particles, and hold them in solution.
solvation
immisciblation
dissolution
saturation
amount of solute in a given amount of solvent
concentration
saturated
solution
suspension
A mixture is
a combination of pure substances bonded chemically
any substance with a uniform composition
a blend of any two or more kinds of matter, as long as each maintains its own unique properties
any group of elements that are chemically bonded to one another
An experiment that tests only one factor at a time by using a comparison of a control group and an experimental group is:
a dependent variable
a controlled experiment
a theory
an independent variable
Most of the volume of an atom is occupied by the
nucleus
nuclides
electron cloud
protons
Mendeleev is credited with developing the first successful
periodic table
method for determining atomic number
test for radioactivity
use of X-rays
Elements in a group, or column, in the periodic table can be expected to have
similar atomic masses
similar atomic numbers
the same number of neutrons
similar chemical and physical properties
The electrons involved in the formation of a covalent bond are
transferred from one atom to another
found only in the s-orbitals
shared valence electrons
in filled orbitals
How many atoms of hydrogen are in a molecule of ammonia, NH3
1
2
3
4
The coefficients in a chemical equation represent the
masses, in grams, of all reactants and products.
relative numbers of moles of reactants and products
number of atoms in each compound in a reaction
number of valence electrons involved in the reaction
If the particles in a sample of matter have an orderly arrangement and only vibrate in place, the sample is
a gas
a liquid
a solid
a mixture
If the temperature of a gas in a container is decreased, what will happen to the pressure of the gas?
it will increase
it will decrease
it will not be changed
there will be no pressure
What are the 3 basic subatomic particles?
Proton, electrode, neutron
Photon, electrode, neutron
Proton, electron, neutron
Proton, electron, neutrode
The process of evaporation occurs when a substance goes from
Liquid to solid
Solid to gas
Liquid to gas
Solid to liquid
The temperature at which a substance changes from liquid to gas is called...
Melting point
Boiling point
Flash point
Gas point
What is the name of the compound we commonly know as "salt"?
Sodium
Sodium chloride
Chloride sodium
It is everything that has mass and volume
Compound
Atom
Matter
Element
A compound is a combination of 2 or more
Atoms
Elements
Electrons
Protons
What are the positively charged particles in an atom?
Protons
Neutrons
Electrons
Nucleon
The nucleus of an atom is made up of...
Protons and Neutrons
Neutrons and Electrons
Protons and Electrons
A(n) ____________________ is a pure substance made of a single type of atom and cannot be broken down.
Element
Compound
Molecule
Mixture
What is an element?
Two or more atoms joined together.
One of over 100 types of atoms
Two or more different elements joined together.
A particle with no charge found in the nucleus of an atom.
