A
True or false: An alloy is a material made of one element that has properties of a metal
false, it has 2 or more
True or false: an ionic bond is when elements share electons
false, covalent
True or false: an ionic bond is what we call the force that holds 2 charged atoms together
true
True or False: Positive ions come before negative ions when writing chemical formulas of ionic compounds
true
True or false: If compounds have polar bonds, they are polar molecules
false
What is an atom?
the smallest part of an element that is still unique
What is a compound?
Combination of 2 or more elements that are chemically bonded
What is an element?
a pure substance that cannot be broken down
What are electrons with the highest energy level that are held most loosely?
Valence electrons
What do you call an atom or group of atoms that has an electrical charge?
Ion
Which particles can be found in the nucleus of an atom?
protons, electrons, neutrons
protons and neutrons
What happens to an atom when it loses and/or gains electrons?
It becomes an ion
What do you call a covalent bond where electrons are not shared equally?
Polar bond
What do halogen bonds need to become stable?
One electron
What is in sodium chloride?
Sodium and chlorine
How can you find the # of protons?
Given an example of a subscript
CO2, MgCl2, etc.. (the number)
How many atoms are in the compound Vinegar? (C2H4O2)
8 (count each number)
What gives metal its properties?
the "sea" of valence electrons
What is true about covalent bonds compared to ionic bonds?
they are weaker
What are electrons with the highest energy level that are held most loosely?
valence electrons
How do you determine how many dots are used in an electron dot diagram?
DOUBLE JEOPARDY!!
Draw an electron dot diagram for Titanium
It is determined by the group number
(3 dots)
What keeps a covalent bond together?
It is held together by the sharing of electrons
How is a positive ion made?
The element or compound must lose electrons
An element of compound must gain electrons