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50 Cards in this Set

  • Front
  • Back
Group 7A elements are also called
halogens
Equal sharing of electrons is called
covalent bonding
What contains the same atoms, but has a different atomic mass?
ion
What is a diatomic molecule
a molecule that contains two atoms such as hydrogen, oxygen, helium, nitrogen, phosphorus, sulphur
Chemical changes differ from physical changes in that chemical changes end in
new kinds of matter with different properties
heterogeneous means
a mixture in which the parts are still visible from other parts
The smallest unit of a element that can exist either alone or in combination is
the atom
A basic unit of length in the metric system is
meter
A distance of 1.5 m is equal to ___ cm
150 cm
One pound equals how many grams
454 grams
The number of significant digits in 0.04060 are
4
Formula representing the whole number multiple of atoms is called
molecular formula
A quart is equal to
946 ml
The mass l.42 kg is ___ g
1420 g
The transition elements are all
metals
A positive charged ion is called a
cation
a negatively charged ion is called a
anion
The capacity to do work is
energy
A compound consists of
two or more elements
One inch is equal to ? cm
an inch is 2.57 cm
What is the formula for density?
Density equals mass divided by volume
The most active metals are those found in
Group 1A
Mass per unit volume is
density
This person arranged the periodic table according to the number of atoms
Henry Moseley
Those elements that are octets are
those with 8 electrons in their outer ring such as all noble gases except helium and hydrogen
The most active member of the halogen family is
Fluorine
The number 3,200,000 correctly written using scientific notation is
3.2 x 10 (6)
The correct set to determine the number of kg is 587 g is
0.587 kg
Homogeneous
a mixture in which the components are uniformly mixed and cannot be visually distinquished from other parts
Unequal sharing or contribution of electrons is called
ionic bonding
What are the parts of the scientific method?
Observations
Problem
Hypothesis
Procedure (Experiment)
Data collection
Results
Conclusion
3.6 x 10 (-5) is what in scientific notation?
0.000036
The number of significant digits represented by 9, 000 is ?
one
Who discovered neon, krypton, zenon and argon?
Sir William Ramsey
The number of significant digits in the measurement of 3.04 cm is
3
Mass per unit volume is written
grams per centimeters cubed
g/cm3
A resistance to change or motion is
inertia
This matter has definite volume, but no definite shape
liquid
The energy of position is
potential energy
This matter has no definite volume or shape
gas
The formula for finding mass is
M = DV or mass equals density times volume
The energy of motion is
kinetic energy
Any process that absorbs energy as it processes is called
endothermic
Any process that gives off energy as it progresses is
exothermic
The number of protons in the nucleus of an atom also represents the number of
electrons
The number of protons and neutrons of an atom represent the atom's
atomic number
Who proposed the atomic theory
Avogadro
A homogenous material consisting of one particular kind of matter is?
element
What are the characteristics of metals?
All metals (except mercury) are solid at room temperature
Metals are crystalline with atoms arranged in regular patterns
Metals tend to give up electrons
Substance that can not be broken down by ordinary means are classified as:
elements