ICP
Approximately how many kelvins are equal to 60 degrees F
289
To keep them from reacting, some highly reactive elements are stored in
Argon
The Greek philosopher Democritus coined hat word for a tiny piece of matter that cannot be divided?
Atom
Chapter 2
Chapter 2
Chapter 3
Chapter 3
Chapter 4
Chapter 4
Chapter 5
Chapter 5
What kind of change would see if a piece of paper where to catch on fire
Chemical change
What is something with high viscosity
Corn syrup
Who provided evidence for the existence of a nucleus is an atom
Ernest Rutherford
What is a very reactive halogen
F(fluorine)
During which phase change does the arrangement of water molecules become more orderly?
Freezing
In what kind of mixture that parts of the mixture are noticeable different
Heterogeneous
How was Bohr's atomic model similar to Rutherford's model?
It describes a nucleus in surrounded by a large volume of space
The SI base of unit of mass is
Kelvins
99% of all matter that can be observed in the universe exists as
Plasma
What is a system of knowledge and the methods used to find that knowledge
Science
Why are peer reviews important
Scientists receive questions and criticism from other scientists
Which of the following statements is true about scientific theories
They are never proven
What are building blocks of all matter
amtoms
The unit for atomic mass is
amu
The standard on which the atomic mass unit is based is the mass of
carbon-12 atom
What is an example of a pure substance
compounds or element
During a phase change, the temperature of a substance
does not change
A substance that is made up of only one kind of atom ia an
element
Collisions of helium atoms with the walls of a closed container cause
gas pressure
In Niels Bohr's model of the atom, electrons move
like planets orbiting the sun
The heat of fusion for water is the amount of energy needed for water to
melt
Group 7a of the periodic table cantinas the
most reactive nonmetals
The glowing neon light is caused by electrons emitting energy as they
move from higher to lower energy levels
Flammability is a material that is able to burn in the presence of
oxegen
What do scientist use to predict the locations of electrons in atoms
probability
What is the variable that changes in response to the manipulated variable
responding variable
The tendency of an element to react is closely related to
the number of valence electrons in atoms of the element
According to john Dalton's observations, when elements combine is a compound
the ratio of their masses is always the same
A mixture can be classified as a solution, suspension, or colloid based on
the size of it's largest particle
What are a list of elements that are all only metals
tin, copper, ceisuim
The phase change that is reversed of condensation
vaporization
What statement is true about ice melting
water molecules move from their fixed position
