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Atoms and compounds
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Explain the difference between an element and a compound.
An element is made up of only one type of atom, while a compound is made up of two or more different types of atoms chemically bonded together.
Compounds with two elements and oxygen often end in '-_________'.
-ate
A __________ is a shorthand way to represent elements.
Symbol
The columns in the periodic table are called __________.
Groups
In compounds, metals usually come first in the name.
True
Air is a compound made of gases.
False
An electron has a positive charge.
False
Atoms are the smallest unit of a compound.
False
Compounds have the same properties as the elements that make them.
False
How can mixtures be separated?
 
Using physical means
 
Chemically
 
Through oxidation
 
By bonding atoms
What is the atomic number of an element?
 
The number of protons
 
The number of electrons
 
The number of neutrons
 
The number of atoms
What are the particles located in the nucleus of an atom?
 
Protons and neutrons
 
Electrons
 
Neutrons and electrons
 
Protons and electrons
What does 'di-' mean in a compound's name, like carbon dioxide?
 
Two
 
One
 
Three
 
Four
Which of the following is a mixture?
 
Air
 
Salt (NaCl)
 
Carbon Dioxide (COâ‚‚)
 
Water (Hâ‚‚O)
In the periodic table, rows are called:
 
Periods
 
Groups
 
Series
 
Levels
Which model describes atoms as tiny indestructible spheres?
 
Solid Sphere Model
 
Plum Pudding Model
 
Nuclear Model
 
Periodic Table Model
What type of bond forms compounds?
 
Sharing or transferring electrons
 
Mixing of elements
 
Physical bonding
 
Magnetic attraction
Which of the following is an example of an element?
 
Oxygen (O)
 
Water (Hâ‚‚O)
 
Carbon Dioxide (COâ‚‚)
 
Air
What is the smallest piece of matter?
 
Atom
 
Compound
 
Molecule
 
Element
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