Chem I
What "number" is the average combination of protons + electrons for an element?
mass number
According to Boyle's law at a constant temperature, if the volume of a container of gas is doubled the pressure of the gas will ______?
decrease
What is the scattering of light by colloids called?
the tyndall effect
The energy an object has because of its motion is what type of energy?
Kinetic
What type of bond is produced by sharing electrons?
covalent
charged particles are known as what?
ions
Which principle states that pressure applied to a fluid is applied throughout the whole fluid?
Pascal's principle
A heterogeneous mixture that never settles is known as what?
a colloid, colloid
What is the formula for pressure?
Force/area
How are synthetic elements found?
not on earth, in a lab, created by man
when elements form bonds, what two properties change?
physical and chemical
What is the SI unit for pressure?
Pascals
Combining two or more substances in a way that leaves their individual properties intact produces what?
a mixture
the amount of energy needed to change a material from solid to liquid state is known as what?
heat of fusion
What type of bond features positively charged ions surrounded by a sea of electrons?
metallic
what is the charge of an atom's nucleus?
positive
The force exerted by a fluid on an object inside it is known as what?
buoyancy/buoyant force
What do we call the state of matter with particles arranged in repeating geometric patterns?
solid
a fluid's resistance to flow is known as what?
viscosity
each energy level can only hold so many of what in an atom?
electrons
What chart was created by scientists and organized atoms by mass number and protons?
the periodic table
What state of matter is "gas-like" and made of positively and negatively charged particles?
plasma
What is the state of matter where particles have no definite shape or volume?
gas
The idea that the volume of a gas increases with increasing temperature provided the pressure does not change is ________ ______.
Charles' Law
when metals combine with non-metals, and electrons are taken or given, what type of bonding occurs?
ionic