Periodic Table
The horizontal rows on periodic table are called
periods
A change of state is a __________ change
physical
The study of carbon-containing compounds is what branch of chemistry?
Organic
Type of matter that is uniform throughout with a variable composition
Homogeneous mixture (solution)
What is an intensive property?
A property that does not depend on the amount of matter.
The vertical columns on the periodic table are called
groups
List the three states or phases of matter
Solid, Liquid, and Gas
The identification of the components and composition of materials is what branch of chemistry?
Analytical Chemistry
Element
What is an extensive property?
A property that depends on the amount of matter.
Boron (B), Silicon (Si), Arsenic (As), Tellurium (Te), Germanium (Ge), Antimony (Sb)
Is the following a physical or chemical change?
A piece of ice melts into liquid water.
Physical change
The study of properties and changes of matter and their relation to energy is what branch of chemistry?
Physical Chemistry
Type of matter that is not uniform throughout
Heterogeneous mixture
What element is Group 18, Period 3?
Ar
What metal is not a solid at room temperature?
Mercury (Hg)
Is the following a physical or chemical change?
Iron rusting
Chemical change
The study of substances and processes occurring in living things is what branch of chemistry?
Biochemistry
A pure substance that can be broken down further
Compound
This type of research is carried out for the sake of increasing knowledge
Basic Research
Shiny, good conductors of heat and electricity, ductile, malleable, soft enough to be cut with a knife
Classify the following as either physical or chemical properties:
A substance melts at 25 degrees CelciusA substance weighs 78.4 g
A substance has a density of 32 g/mL
A substance burns in the presence of oxygen
Physical, Chemical, Physical, Physical, Chemical
The use of mathematics and computers to understand the principles behind observed chemical behavior and to design and predict the properties of new compounds is what branch of chemistry?
Theoretical Chemistry
Classify the following substances:
Soda with no ice
Bromine
H2O
Tacos
Homogeneous mixture, Element, Compound, Heterogeneous mixture
What happens to energy during a physical or chemical change?
It changes form, but is never destroyed.