Transcript Unit 1 Test Review Guide Slides

Chemistry Unit 1
Review for TEST!!! Tomorrow!!
Write down one qualitative
observation from the Baggie Lab
Write down one quantitative
observation from the Baggie Lab
A Lewis dot symbol for an element
shows an element’s symbol and an
arrangement of dots that indicates the
____________ electrons.
Which element has the
the electron
configuration of:
2
2
5
1s 2s 2p
In the visible electromagnetic
spectrum ROYGBIV, Red has the
___________ energy.
The _____ orbital can be filled
with 6 electrons
At first glance, the periodic table is
arranged by the atoms’ ___________.
To calculate the atomic weight of
an element you should add the
protons plus the _____________.
The outer shell electron
configuration of Potassium (K) has
1 electron in the ____ orbital
In an electrically neutral atom, the number
of protons in the nucleus is balanced by an
equal number of _________.
How many more electrons does Oxygen
need to have an electron configuration
similar to neon?
Oxygen-17 and Oxygen-18 are
examples of _____________.
What is the mass number of an carbon
atom with 6 protons, 8 neutrons, and
6 electrons? Write down the symbol.
The _____________ of the atoms
determine how the atoms combine
to form molecules.
Elements in a ______ or column in the
periodic table can be expected to have
similar properties
How many valence electrons does
Fluorine (F) have?
Which element has more ionization
energy, Helium or Calcium?
Which element has a larger atomic
radius, Boron or Barium?
According to the table, identify the
unknown element that produced the
red color
Element Molecule
Color
Calcium
CaCl2
Orange
Accepted Wavelength Range
(nm)
600
Copper
CuCl2
Blue
490
Lithium
LiCl
Red
650
Fill in the missing data point
Element
symbol
Atomic #
Atomic Mass
(Mass #)
Cu
29
63
Protons Neutrons
29
?
Electrons
29
Write the Lewis dot structure for
CaCl2
How many total valence electrons are
in a molecule of Lithium chloride, LiCl?
The mass of a marble is 30g. The
volume is 10mL. What is the density?
The density of a toy dinosaur is 5
g/ml. The mass is 10g. What is the
volume?
You have an unknown metal with a
volume of 15mL. The density is
4g/mL. What is the mass?
A 20g toy car is placed into a
graduated cylinder containing 20ml of
water. The water is displaced by
10ml. What is the density of the car?
A 40g piece of metal is placed into a
graduated cylinder containing 20 mL of
water. The water rises to 60 mL after
the metal is added. What is the density
of the metal?
A metal’s density was taken with three
different trials. The densities recorded
were 2.8 g/mL, 2.4 g/mL, and 2.2
g/mL. What is the metal’s average
density?