5 10 15 20 25 enough elements & atoms already! electric energy! crazy compounds hip hydrogen...
TRANSCRIPT
5
10
15
20
25
Enough Elements & Atoms Already!
Electric Energy!
CrazyCompounds
Hip Hydrogen
Bonding
Sassy Solutions
5
10
15
20
25
5
10
15
20
25
5
10
15
20
25
5
10
15
20
25
These are substances that cannot be broken down
chemically into simpler kinds of matter.
What are Elements? 5
Atoms are composed of which these three subatomic . (give the charges of each)
What are positively charged protons, no
charged neutrons, and negatively charged
electrons? 10
These are high-energy particles that orbit about the nucleus at very high speeds in different energy levels.
15What are electrons?
These are atoms of the same element that have a
different number of neutrons.
What are isotopes?
20
These are the 4 most common elements in living
cells.
25
What are Hydrogen, Oxygen, Nitrogen,
and Carbon?
Matter can exist in these three states.
5
What are solid, liquid, gas?
This type of reaction occurs when one or more substances change to produce one or more
new substances.
What is a chemicalreaction? 10
This is a chemical substance that reduces the amount of activation energy needed for a reaction to
take place.
What is a catalyst?
15
During this reaction, a reactant gains one or more electrons, becoming more negative in
charge.
What is a reduction reaction?
20
This type of reaction has a loss of net energy. (Also describe how
it is observed on a graph)
What is a exothermic reaction, and products are graphed below the
reactants.
25
When atoms of two or more different elements are joined by
chemical bonds these are formed.
5What are
compounds?
This is what we call atoms with an electrical charge.
What are ions?
10
Because of the number of unpaired electrons in its outer shell, carbon is
able to form this many covalent bonds with other atoms.
What are 4?
15
This is how we explain the difference between an ionic bond and a covalent bond.
In an ionic bond electrons are exchanged between atoms, while atoms in a covalent
bond are shared.20
This is the simplest part of a substance that retains all of the properties of that substance and
can exist in a free state.
What is a molecule? 25
What is do not share
electrons equally? 5
A water molecule is polar because its hydrogen and
oxygen atoms do this.
The force of attraction between a hydrogen molecule with a partial
positive charge and another atom or molecule with a partial or full negative
charge is referred to as this.
What is a hydrogen bond?
10
These are the 4 things that can result from hydrogen
bonding.
What are cohesion, surface tension, adhesion, and capillarity ? 15
The polarity of water allows it to dissolve other polar substances such as______ but doesn’t allow it to dissolve nonpolar
substances such as____ .
What are sugar and oil?
20
Why is ice less dense than water?
What is…ice is less dense because of the structure of ice crystals,
water molecules in ice are bonded in a way that creates large amounts of open space
between the molecules; the open space lattice structure causes ice
to have a low density. 25
The amount of solute dissolved in a fixed amount of
solution is called this.
What is concentration?
5
A solution with a pH of 7 is considered to be
this.
What is neutral?
10
A solution in which no more solute can be dissolved is
referred to as this.
What is a saturated solution
? 15
This is the name of the OH− ion
What is the hydroxide ion?
20
Chemical substances that neutralize small amounts of either an acid or a base is
called this.
What is a buffer?
25