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WorksheetsChemistry Review
Total questions: 46
Worksheet time: 15mins
What did Joseph Priestly contribute to the field of chemistry?
The periodic table
The pH scale
The 3 states of matter
The discovery of the oxygen molecule
Where are the reactants located in a chemical equation?
Left (before the arrow)
Right (after the arrow)
Bleach is an example of what?
Base
Acid
Which one of these ARE NOT a characteristic of an acid?
They taste sour
They can be painful to skin
They range between 8-14 on the pH scale
Soda is an example of an acid
Milk is a what?
Base
Acid
T or F Mendeleev did not design the periodic table of elements.
False
True
Elements are organized on the periodic table by?
By atomic number
By family (metal, metalloid, non-metal)
By reactivity
A and B
Which one of these are a characteristic of a base.
More H ions are present
Feel slippery on skin
Turn litmus paper red
Range between 0-6 on pH scale
Which one of these are an examples of a physical change?
Oxidation
Burning
Food coloring
Formation of a gas
Which number is neutral on the pH scale?
7
1
12
5
What is a claim?
A hypothesis
An opinion
An argument
A statement of fact based on data
Which one of these are not true about liquids?
Liquids do not have shape
Liquids do not have volume
Particles slide in liquids
Liquids take on the shape of the container it is in.
Which one of these are examples of a physical property?
Density
Solubility
Texture
All of the above
What is the difference between a physical change and a chemical change?
Chemical changes only impact the way a substance looks
Physical changes are irreversible
Chemical changes are irreversible
None of the above
If an object floats in a beaker of water, what can be inferred about its density?
The density of the object is greater than the density of water
The density of the object is less than the density of water
What is the difference between an element and a compound?
Compounds are a pure substance, elements are not.
An element is a pure substance, compounds contain more than one element.
Compounds can be found on the periodic table.
Elements can multiple types of atoms
Which one of these are NOT TRUE about the periodic table?
There are 7 groups on the table
Elements are more reactive the further down the column except for the halogen group
Elements are grouped by atomic number
There are 7 periods on the table
Which 2 groups are the most reactive?
Alkali metals/Halogens
Alkaline metals/Halogens
Noble Gases/Halogens
Alkali metals/Noble Gases
Which 2 groups are the least reactive?
Noble gases/Halogens
Halogens/Alkali metals
Halogens/Transition metals
Transition metals/Noble Gases
What are the 2 types of mixtures?
Homogeneous
Solution
Heterogeneous
A and C
Which one of these is an example of a heterogeneous mixture?
Blended smoothie
Un-blended smoothie
Water is an example of a
Element
Compound
Mixture
None of the above
Which one of these elements are extremely reactive?
Flourine
Hydrogen
Neon
Oxygen
What kind of matter is a solution?
Solid
Liquid
Gas
All of the above
Particles are fixed together in a
Solid
Liquid
Gas
None of the above
An object with a definite shape and volume is a
Solid
Liquid
Gas
All of the above
Which 2 phases are present at a melting point?
Liquid to gas
Liquid to solid
Solid to liquid
Gas to solid
Which 2 phases are present at a boiling point?
Gas to solid
Liquid to solid
Liquid to gas
Solid to liquid
Define precipitate.
A liquid
A type of chemical reaction
A solid formed by a chemical reaction
A gas
Which one of these is a sign of a chemical change
A change in energy (temperature)
A change in color
A gas forming
All of the above
Oxidation is an example of a
Physical property
Chemical property
Density is an example of a
Physical property
Chemical property
Which one of these is NOT a chemical change?
Burning wood
Cutting paper
An apple turning brown
An iron rusting
What does a Triple Beam balance measure?
Volume
Density
Mass
None of the above
What does a graduated cylinder measure?
Density
Mass
Mass in liquids
Volume in liquids
K is an example of a
Compound
Element
CO2 is an example of a
Element
Compound
Cu is an example of a
Compound
Element
H2O is an example of a
Element
Compound
Products are on which side of a chemical equation?
Right (after the arrow)
Left (before the arrow)
Define chemical reaction
Atoms colliding with each other
2 liquids coming together
Atoms separating from each other
2 mixtures coming together
Endothermic reactions _________ energy.
Release
Absorb
Exothermic reactions ____________ energy.
Absorb
Release
Fireworks are an example of a _____________ reaction.
Endothermic
Exothermic
A fire giving off heat is an example of a _________ reaction.
Exothermic
Endothermic
An ice cube melting from heat is a type of ___________ reaction.
Exothermic
Endothermic
