WorksheetsMidterm Exam Review: Unit 1
Total questions: 50
Worksheet time: 25mins
Chemistry is a _____ science.
physical
biological
celestial
Matter is defined as anything that has ____ and ____.
mass and volume
color and odor
weight and temperature
Chemistry is the study of ___.
rocks and fossils
matter
living things
When using the scientific method, what occurs FIRST?
communication
experimentation
observation
Which branch of chemistry includes the use of math and computers?
organic
theoretical
biochemistry
Which of the following compounds would be studied in ORGANIC chemistry?
propane, C3H8
table salt, NaCl
rust, Fe2O3
When using the scientific method, what occurs LAST?
observation
experimentation
communication
Which branch of chemistry includes the study of substances and reactions in living things?
analytical chemistry
organic chemistry
biochemistry
What is a hypothesis?
A testable statement or idea
a bacterial infection
a step-by-step procedure
Which branch of chemistry deals with the study of energy and how it affects matter?
analytical chemistry
physical chemistry
inorganic chemistry
mass, volume, color, odor, size, texture....
physical properties
chemical properties
reactivity, flammability...
physical properties
chemical properties
ripping paper, crushing a can, making a mixture...
physical changes
chemical changes
cooking, burning, rotting...
physical changes
chemical changes
NaOH + HCl --> NaCl + H2O
The reactants are ....
NaOH and HCl
NaCl and H2O
NaHCO3 + HC2H3O2 --> NaC2H3O2 + CO2 + H2O
The products are...
NaHCO3 and HC2H3O2
NaC2H3O2 + CO2 + H2O
When salt dissolves in water, a salt water mixture is made. This is an example of
a physical change.
a chemical change.
When a piece of magnesium is placed in hydrochloric acid, hydrogen gas bubbles form and heat is produced. This is an example of
a physical change.
a chemical change.
During a physical change, the chemical composition of a substance changes.
True
False
Chemical changes result in physical changes, too.
True
False
Type of matter made from only 1 kind of atom
element
compound
mixture
Type of matter made from 2 or more kinds of atoms bonded to each other.
element
compound
mixture
Type of matter made from 2 or more substances blended together (NOT bonded).
element
compound
mixture
Copper
element
compound
mixture
methane
element
compound
mixture
blood
element
compound
mixture
A mixture that is uniformly mixed; same proportions throughout
homogeneous
heterogeneous
A mixture that is NOT uniformly mixed; different proportions throughout
homogeneous
heterogeneous
What is pictured?
element
compound
mixture
What is pictured?
element
compound
mixture
What is pictured?
element
compound
mixture
What is pictured?
homogeneous mixture
heterogeneous mixture
What is pictured?
homogeneous mixture
heterogeneous mixture
What method of separating a mixture would be used to separate salt and water?
filtration
evaporation
distillation
What method of separating a mixture would be used to separate sand and water?
filtration
evaporation
distillation
Heat
thermal energy
electrical energy
potential energy
The Law of Conservation of Energy states....
the total amount of energy in the universe is increasing.
the total amount of energy in the universe is decreasing.
the total amount of energy in the universe is constant.
Energy is a form of matter.
True
False
Energy of Motion
kinetic energy
potential energy
Melting
solid --> liquid
liquid --> gas
gas --> solid
heat is released or given off
endothermic
exothermic
heat is absorbed
endothermic
exothermic
Stored energy
Kinetic energy
Potential energy
What is an example of electrical energy being converted into mechanical energy?
eating an apple
turning on a fan
lighting a bunsen burner
What state of matter has no definite shape, but does have a definite volume?
solid
liquid
gas
plasma
What is an example of chemical energy being converted into thermal energy?
ripping up a piece of paper
turning on a fan
lighting a bunsen burner
Plasma is found at _____ temperatures.
very low
very high
Which pair of phase changes are opposites?
melting and vaporization
freezing and condensation
vaporization and condensation
The coldest state of matter
Bose-Einstein condensate
Curie-Einstein condensate
Curie-Bose condensate
vibrational motion in a fixed position
solid
liquid
gas
plasma
