Which of the following is an element?
Which of the following is a compound?
Choose one physical property.
Choose one chemical property.
The difference between a compound and a mixture is that the elements in a compound are chemically combined, but the components of a mixture are not.
When a substance melts, or boils, or freezes, it is a _________ change.
___________ changes can only be identified after the change has happened.
Phases (components) of a mixture can be easily seen in a:
A(n) ________ is the simplest form of matter with its own unique properties, while a(n) _________ is chemically combined in definite proportion.
A piece of paper is torn into small pieces.
An iron shovel is left outside and becomes covered in rust.
Copper will react with water to form green tarnish.
Sulfur is yellow and smells of rotten eggs.
The change from solid to liquid is called
Niels Bohr proposed this model of the atom, whose name comes from the position of electrons in orbits around the nucleus. What is it called?
An element’s atomic number is the
If an element has 9 protons and 10 neutrons, its atomic mass will be
If an element has 9 protons and 10 neutrons, the atomic number will be
Which region of the atom has the most mass?
Which region of the atom occupies the most space?
An atom has a neutral charge because
Elements that have the same number of protons but different numbers of neutrons are called
Choose the element that is liquid at room temperature.
Metals are
What is the most reactive element on the periodic table?
Elements within each group of the periodic table share similar chemical properties because they have identical
Which of the following is a noble gas?
Which of the following is an alkali metal?
Which of the following is a halogen?
Which of the following is a transition metal?
Which of these is a property of covalent compounds?
Metals are found on the __________ side of the periodic table, and they form __________, which are positively charged.
What type of bond would form between nitrogen and oxygen?
This type of bonding has valence electrons that move freely throughout the substance.
An ionic bond will form between
Metallic ions use the element name with no changes when naming compounds.
Non-metallic ions use the root portion of the element name with “ide” added when naming compounds.
Prefixes are used when naming
The prefix for "two" is
The prefix for "five" is
The formula for phosphate is
The formula for sulfate is
The formula for ammonium is
The formula for hydroxide is
The name of this compound, Mg3P2, is
Name this compound: NaOH
Name the following: MgO
Name this compound: Na3N
The formula for carbon tetrachloride
Formula for phosphorus pentachloride
Name this compound: SO2
Name this compound: CO
What is the formula for sodium chloride?
What is the formula for carbon tetrahydride?
What is the formula for copper(II) chloride?
What is the formula for potassium phosphate?
What is the formula for this compound: ammonium sulfate
A chemical equation must have an equal number of atoms on the left and right sides of the arrow.
In a chemical equation, the arrow means
A synthesis reaction has the general form of
Products of combustion when CH4 reacts with oxygen would be:
Single replacement reactions can occur when the element added to an ionic compound is less active than the metal in the compound.
When predicting products of a double replacement reaction, you must use the activity series of metals.
AB --> A + B is the common form of a __________________ reaction.
In the activity series of elements, their reactivity decreases as you move lower in the list.
Which of these elements is the most reactive?
Which of these chemical equations is correct?
Will this reaction take place? Mg + ZnCl2 —> MgCl2 + Zn
Will this reaction take place? 2 Ag + Li2O —> 2 AgO +2 Li
One of the products of this reaction [ Mg(OH)2 + NaCl —> ?] is
Balance this reaction: _CS2 + _O2 → _CO2 + _SO2
Balance this reaction: _CO2 + _H2O → _C2H2 + _O2 (Remember to simplify if needed.)
In the following balanced equation, 4Al + 3O2 --> 2Al2O3 , the four is a
In the following balanced equation, 4Al + 3O2 --> 2Al2O3 , the three following the oxygen (O) is a
Coefficients tell the number of ______________ of a compound present in a chemical reaction, and a subscript tells the number of ____________ present in a compound.