Mixtures
A solvent and one or more solutes make up a __________
homogeneous mixture (solution)
Elements and compounds are what?
substances
Atoms are made of how many types of subatomic particles?
3
The Periodic Tables shows a list of all known ___________.
Elements/Atom types
Atoms that have different numbers of neutrons are called ___________.
Isotopes
The parts of a _______ are evenly mixed but not bonded together.
homogeneous mixture
A _______ such as water or table salt contains two or more substances in a specific combination.
compound
The atoms of a particular element always have the same number of __________
protons
The number of protons in an element (atom) is the same as the ___________ number on the Periodic Table.
Atomic Number
How are protons and neutrons alike?
Both are in the nucleus of an atom
Protons have what electrical charge?
positive
In a _____________ the individual components are not evenly mixed.
heterogeneous mixture
neutrons
What term represents the combinations of atoms (elements) that make up a compound?
Chemical Formula
Energy
negative
A compound made from two elements will have what kind of properties (same or different from its parts)?
Different properties that either element
An element (atom) can gain or lose electrons which results in the formation of ________.
Ions
Pure gold (Au) is an example of a _____
element
An atom that has the same number of protons and electrons has what charge?
No charge
(Long Answer) Identify one way that homogeneous and heterogeneous mixtures are different.
You can physically separate heterogeneous mixtures because they are not evenly mixed. You can't easily separate homogeneous mixtures because they are evenly mixed.
(Long Answer) Use the word "elements" in a definition of the word compound.
A compound is made of two or more elements that are chemically bonded.
(Long Answer) The atomic number of Iron is 26. What can you predict about iron atoms using this information?
It has 26 protons, 26 neutrons, and 26 electrons.
(Long Answer) List and describe three different methods that can be used to separate the components of a mixture.
You can separate the parts out by hand (like in a salad or trail mix), you can separate parts using a filter (like separating sand from pebbles) and you can boil the liquids in a solution to separate its parts.
(Long Answer) Describe an atom's electron cloud using you own words.
The electron cloud shows the region where electrons could be at any given time.