Midterm Review- Whiteboards
Chemistry and Scientific Basics
Review
Lake Dallas Middle School 2012
Chemistry
Which subatomic particle is positive?
 Protons
 Which subatomic particle is negative?
 Electrons
 Which subatomic particle is neutral –
no charge?
 Neutrons
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Chemistry
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Which subatomic particles are in the
nucleus of an atom?
Protons and Neutrons
Which subatomic particle is the “identity”
of an atom?
Protons
Which subatomic particle is the “glue” that
holds the nucleus together?
Neutrons
Chemistry
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Which subatomic particle has a mass of
almost zero?
Electrons
Which two subatomic particles have a mass of
1amu?
Protons and Neutrons
Which subatomic particle is the same as the
atomic number?
Protons
Chemistry
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What are located on outmost energy level?
Valence electrons
What tells you the number of valence
electrons?
Group #
How many valence electrons does Fluorine
have?
7
Chemistry
Is Sulfur a metal, metalloid, or nonmetal?
 Nonmetal
 Find the P.E.N. for Oxygen
 P=8, E=8, N=8
 Which period is Sodium in?
3
 Which element has 18 protons?
 Argon (Ar)
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Chemistry
Which have more in common?
Group/periods
 Groups
 Which direction do periods go on the
periodic table?
 Horizontally
 Why do we balance equations?
 Law of conservation of Matter/Mass
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Chemistry
What is the simplest form of a
substance?
 Element
 Which group is nonreactive?
 18 – Noble Gases
 Which group is most reactive?
 1-alkali metals
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Scientific Basics
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What variable do we measure in an
experiment?
Dependent
Which axis is are Independent Variables
graphed on?
X-axis
What tool would you use to add a small
amount of a liquid to a beaker?
Dropper
What tool would you use to heat up a
substance during a lab?
 Bunsen Burner
 What is the basic unit of measurement
for mass?
 Gram
 What are the states of matter?
 Solid, liquid, gas
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Scientific Basics
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What should you wear while working with
dangerous chemicals, and fire?
Goggles, gloves, apron
What tool do we use to measure the volume of
a substance?
Graduated Cylinder
What do we use to hold small specimens?
Petri dish
Scientific Basics
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This created a new substance with new
properties?
Chemical change
Is water boiling a chemical or physical
change?
Physical – state of matter
Is a bike rusting due to rain a physical or
chemical change?
Chemical – reactivity- new substance
Scientific Basics
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What is the ability to be drawn into a wire?
 Ductility
 What is the ability to burn?
 Flammability
 What is the ability to be pounded into thin
sheets?
 Malleability
 What is the ability to be transfer thermal
energy?
 Conductivity
Scientific Basics
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What is the eyewash used for?
If you get chemicals or a unknown substance
in your eyes
Is baking a cake a physical or chemical
change?
Chemical – new substance
What is the variable that the scientist controls
during an experiment called?
Independent