Chapter 1
What type of substance has multiple components that are chemically combined in fixed proportions?
Compound
A gas in a balloon has a definite ________ even when the temperature changes.
Mass
The sum of the number of protons and neutrons in an atom’s nucleus.
Mass Number
This type of formula shows us how the atoms are bonded and what the molecule looks like.
Structural Formula
This is the formula for finding density.
D = M/V
Which process could separate salt form water?
Distillation
This is a liquid's resistance to flow.
Viscosity
The total number of protons in the nucleus of the atom. Also the total number of electrons surrounding the nucleus.
______ bonds develop when electrons are transferred from a metal to a non-metal.
Ionic
An element that is usually soft, not malleable or ductile, and a poor conductor of heat and electricity.
Non-metal
A combination of two or more substances that are not chemically combined.
Boiling Point is a (characteristic/non-characteristic) property.
Characteristic
Who developed the atomic model featuring shells for energy levels?
Bohr
Regarding electron attraction, would a large atom or a small atom bond better?
Small Atom
The atomic mass of an element is typically not a whole number because most elements have more than one _______.
Isotope
This is what we call the scattering of light through a colloid.
The Tyndall Effect
If the mass of a block of wood is 40g and its volume is 50cm3, what is its density?
0.8 g/cm3
A neutral potassium atom has an atomic number of 19 and a mass number of 39. How many neutrons does the potassium atom have?
20
Why and how do atoms bond?
Atoms bond because they want stability. They bond by either giving, taking, or sharing electrons. This depends on polarity and the type of atom.
What is the Law of Conservation of Mass?
This can break the bonds of surface tension.
Soap
What type of substance has a specific, three-dimensional pattern of particles, as well as a specific melting point?
Crystalline Solid
Mendeleev arranged his periodic table based on _____.
Atomic Mass
The most simplified empirical formula for C32Na16O8 would be ________.
C4Na2O
Imagine a very large atom with 14 energy levels. How many electrons would the 14th level hold if it were full?
392