Chapter 1 test questions Flashcards
The knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested
Science
The study of
-the composition, structure, and properties of matter
-the processes that matter undergoes
-the energy changes that accompany these processes
Chemistry
Study of most carbon containing compounds
(excludes oxides and carbonates)
Organic Chem
Study of non-organic substances that do not have carbon
(includes oxides and carbonates)
Inorganic Chem
Any substances that has a definite composition
Chemical
Often accidental discoveries
Basic research
Helps solve everyday problems
-Solves a specific problem-
Applied research
Anything that has mass and takes up space
Matter
The smallest amount unit of an element that maintains the chemical identity of that element
atom
substances that enter into a chemical change
reactant
Substances that are formed by a chemical change
product
A blend of two or more kinds of matter, each of which retains its own identity
mixture
Horizontal rows of elements in the periodic table
period
vertical columns of the periodic table
groups
electrons on the outermost energy level of an atom.
valence electrons
What is the state change?
Solid to gas
sublimation
What is the state change?
gas to solid
deposition
Endo or Exothermic?
Lower energy state to higher energy state (products have more energy)
Endothermic
Endo or Exothermic?
Higher energy state to lower energy state (products have less energy)
Exothermic
Which variable is directly manipulated during an experience
Independent variable
What variable is affected
dependent variable
bendable properties of metal
malleable
what is being dessolved
Solute
What is doing the dissolving
Solvent
Which of the following is considered organic
-C2H4
- C5-H10-O5
-CO2
-H2O
-MgBr2
C2H4 and C5-H10-O5
List the 6 branches of chemistry
Organic
Analytical
Theoretical
Biochemistry
Inorganic
Physical
Which of the following is considered a compound
-NaCl
-Cl
- water
NaCl and water
Which of the following would be considered an extensive physical property
-Length
- Mass
- Melting point
- Color
Length and Mass
Identify the state of matter
-no fixed volume
-no fixed state
gas
Identify the state of matter
-fixed volume
-Not fixed shape
liquid
Identify the state of matter
-fixed volume
-fixed shape
solid
Identify the state of matter
-ionized gas
plasma
Identify the state of matter
-loosely packed particles
liquid
Identify the state of matter
-tightly packed particles
solid
Identify the state of matter
-particles spread apart
gas
list the five chemical properties of a chemical reaction
-gas
- precipitate
-light
-color change
-temp change
Which of the following are considered endothermic
-Sublimation
-Evaporation
-Freezing
-Melting
-Sublimation
-Evaporation
-Melting
Which of the following are considered exothermic
-Sublimation
-Deposition
-Freezing
-Condensation
-Deposition
-Freezing
-Condensation
Which of the following is a pure substance
-Fe
-Water
-Salt water
-CuCl2
Fe
Water
CuCl2
Changing the mass of a sample would affect its extensive or intensive physical properties
Extensive
Which of the following would be considered a chemical reaction
(a) - After mixing two liquids, the mixture increases in temperature
(b) - Boiling water and gas is given off
(c) - After mixing a liquid and a solid, a gas is given off
(d) - After mixing two liquids together, a solid forms
(a)
(c)
(d)
Groups are _______ columns on the periodic table.
verticle
Periods or rows identify the number of ______ ______ that elements in that row contain
energy levels
Metal, Metaloid, or Non Metal
malleable
Metal
Metal, Metaloid, or Non Metal
shiny and brittle
Metaloid
Metal, Metaloid, or Non Metal
dull and brittle
non metal or metal
Metal, Metaloid, or Non Metal
conductor
metal
Metal, Metaloid, or Non Metal
semiconductor
mettaloid
Metal, Metaloid, or Non Metal
nonconductor
non metal
What is the name of the hottest zone of the bunsen burner
main combustion zone
What feature of the bunsen burner allows to produce a hotter flame than previous laboratory burner
air vent
What are three safety precautions before lighting the bunsen burner
-clear workspace
-inspect bunsen burner
-put goggles and apron on
