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WorksheetsChemistry Summative Review
Total questions: 40
Worksheet time: 21mins
What is the difference between an element and a compound?
An element is made up of two or more compounds.
A compound is made up of two or more elements.
There is no relation between the two terms.
They are different because one involves atoms and the other does not.
Is this substance an element or a compound: Oxygen (O)
Element
Compound
Neither
Is this substance an element or a compound: Water (H2O)
Element
Compound
Neither
Is this substance an element or a compound: Ammonia (NH3)
Element
Compound
Neither
Is this substance an element or a compound: Nitrogen (N)
Element
Compound
Neither
Is this substance an element or a compound: Copper (Cu)
Element
Compound
Neither
Is this substance representing an element or compound?
Element
Compound
Neither
Pure gold is found on the Periodic Table and has a symbol of Au. Is this an element or compound?C
Compound
Element
Neither
Choose the TWO examples of elements below:
Oxygen -O
Water -H2O
Carbon Dioxide -CO2
Sodium- Na
Choose the TWO examples of compounds below:
Oxygen -O
Water -H2O
Carbon -C
Ammonia- NH3
Which terms below represent matter? (choose more than one)
Chairs
Water
Ice
Shadow
Sounds of a Bell
What is the formula for density?
Density = m/v
Density = m X v
Mass = density x height
Density = m/w
What is the density of lemonade if the mass is 6g and the volume is 2mL?
12
8
3
0
Which of these statements (more than one) describe a physical property?
An ice cube melts to create a cup of water.
Water is boiled over a stove and begins to evaporate.
Pure sodium explodes when dropped into water.
A cell phone is 5 inches long and weighs 26 grams.
Which of these statements (more than one) describe a chemical property?
An ice cube melts to create a cup of water.
Water is boiled over a stove and begins to evaporate.
Pure sodium explodes when dropped into water.
A metal bicycle has the ability to rust when left outside.
Which is not evidence that a chemical change has taken place?
Bubbles formed
A color change occurred
A temperature change occurred
The shape was changed
A chemical change occurs when there is a _______________ reaction.
Chemical
Physical
Color
Change
What is the difference between a chemical and physical change?
There is no difference.
A physical change will change the substance into something new.
A chemical change can be changed back because nothing new was formed.
A chemical change creates something new, while a physical change just changes a physical property.
Choose all of the statements that represent a physical change:
A paperclip is bent.
A metal bucket rusted when left outside.
Sugar dissolved in cup of water.
A large log was chopped into smaller pieces for firewood.
Choose all of the statements that represent a chemical change:
A brick is painted a different color.
A metal bucket rusted when left outside.
Sugar dissolved in cup of water.
Calcium chloride is mixed with water and heat is produced.
What is the law of conservation of mass?
Mass can be created or destroyed.
Mass cannot be created but it can be destroyed.
Mass is neither created or destroyed.
Mass cannot exist after a chemical reaction occurs.
If a 5g ice cub is melted into a bucket, what would the mass of the liquid be?
2.5 g
10 g
0g
5 g
This is the compound formula for Glucose (sugar). How many total atoms are in this compound?
12
6
24
144
This is the compound formula for Glucose (sugar). How many Hydrogen (H) atoms are in this compound?
12
6
24
144
This is the formula for the compound of water. How many total atoms are in this compound?
2
3
0
1
This is the formula for the compound of water. How many total Oxygen atoms are in this compound?
2
3
0
1
This is the chemical equation that represents the chemical process of photosynthesis in plants. What is a product from this equation?
O3
H2O
C6H12O6
C2
This is the chemical equation that represents the chemical process of photosynthesis in plants. What is a reactant from this equation?
O3
H2O
C6H12O6
C2
This is the chemical equation that represents the chemical process of photosynthesis in plants. How many Oxygen (O) atoms are visible on the products side?
6
2
8
1
This is the chemical equation that represents the chemical process of photosynthesis in plants. Any compound or element to the right of the arrow is considered a _____________.
Reactant
Product
Ingredient
Magic
Check which ones are an exothermic reaction:
Fireworks exploding
Chemical cold packs
Process of photosynthesis (absorbs heat)
Burning wood
Combining vinegar and baking soda
Check which ones are an endothermic reaction:
Cooking an egg
Chemical cold packs
Process of photosynthesis (absorbs heat)
Chemical Hand Warmers
Combining vinegar and baking soda
Chemical reactions that release energy (create heat) are called:
Exothermic
Endothermic
Physical
Exithermic
Chemical reactions that absorb energy (creates cooling) are called:
Exothermic
Endothermic
Physical
Exithermic
If substance A is combined with substance B and the temperature decreases from 50 degrees to 35 degrees, then it could be considered a ________________ reaction.
Endothermic
Exothermic
Physical
Exithermic
Which of these statements (more than one) describe an endothermic reaction?
Absorbs energy
Releases energy
Creates a warmer temperature
Creates a cooler temperature
Which of these statements (more than one) describe an exothermic reaction?
Absorbs energy
Releases energy
Creates a warmer temperature
Creates a cooler temperature
Each set of molecules represent a state of matter. What order are they represented in?
Gas, solid, liquid
Solid, liquid, gas
Gas, solid, solid
Liquid, solid, gas
Each set of molecules represent a state of matter. How does the speed of molecules change from solid to liquid to gas?
They slow down
They stay the same
They don't move
They speed up
Molecules in gas are farther apart than molecules in a solid.
True
False
