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WorksheetsGrowth Test 2024
Total questions: 84
Worksheet time: 1hrs 3mins
Burning wood is a
chemical change
physical change
Broken glass is a
chemical change
physical change
Melting butter for popcorn is a
chemical change
physical change
An ice pack getting cold after you put it in the freezer for an hour is a
chemical Change
physical Change
A change in the size, shape, or state of matter.
chemical change
physical change
Which of the following is NOT an example of a physical change?
crumpling paper
sharpening a pencil
clothes shrinking
sour milk
A change in which NEW substances are formed.
Chemical change
Physical change
Which of the following is NOT an example of chemical change?
sour milk
burning wood
breaking a pencil
rust
Salt dissolved in water is a
physical change
chemical change
Chewing food is a
physical change
chemical change
Describes how matter reacts with other matter. Examples: flammability and toxicity.
physical properties
chemical properties
if there is a change in color, production of light, production of heat, production of gas, production of smell or formation of a new substance.
physical change
chemical change
What does it mean when there is a physical change?
Matter has change from one substance into another.
Matter has change on the molecular level
A new substance has been formed.
Matter has changed size, shape or form.
What is an example of a physical change that happens inside your body?
Food being broken down by acids in your stomach.
Food being broken down into small pieces by your teeth.
Food being moved to your stomach.
Water being absorbed inside your large intestine.
Which phrase most accurately describes a chemical change?
A change on the molecular level.
A change in appearance.
A change in taste.
A change in size.
A teacher is demonstrating physical and chemical changes to her class. Which action should she use to demonstrate a chemical change?
cutting a piece of paper
folding a piece of paper
tearing a piece of paper
burning a piece of paper
A cup of water is left outside for two days. When it was checked there was only half a cup left. What happened?
evaporation; chemical change
condensation; physical change
evaporation; physical change
condensation; chemical change
Rust on a bike is an example of chemical change.
True
False
Rotting fruit produces a bad smell. This happens because the fruit is experiencing a
physical change
chemical change
What is an example of a chemical change that happens inside your body?
Food being broken down by acids in your stomach.
Food being broken down into small pieces by your teeth.
Food being moved to your stomach.
Water being absorbed inside your large intestine.
Endothermic reactions feel...
Hot
Cold
Exothermic reactions feel...
Hot
Cold
True or false: Exothermic reactions mostly absorb energy.
True
False
True or false: Exothermic reactions mostly release energy.
True
False
This is an example of an...
Exothermic chemical reaction
Endothermic chemical reaction
The bombardier beetle's hot spray is a result of an...
Exothermic chemical reaction
Endothermic chemical reaction
The bag you made in class that felt cold afterwards was an example of an...
Exothermic chemical reaction
Endothermic chemical reaction
The energy absorbed by endothermic reactions is used to...
form chemical bonds between atoms that release a lot of energy when they're formed
break chemical bonds that require a lot of energy to break
The energy released by exothermic reactions happens when...
chemical bonds that release a lot of energy when they're formed are formed between atoms
chemical bonds that require a lot of energy to break are broken
Cooking bacon as it absorbs heat and watching it change color and smell is a good example of an...
Exothermic chemical reaction
Endothermic chemical reaction
How many "C" are in CO2
2
1
0
3
What are Chemical Compounds?
Molecular formulas
mixtures of two or more elements non chemically bonded
chemical substances made from more than one element chemically bonded together
chemical substances made from more than one element not chemically bonded together just sitting next to each other
How are Chemical compounds expressed as?
Chemical Chart
Chemical name
Chemical Table
Chemical Formula
What does the periodic table have?
metals and non-metals
metals, metalloids, and non-metals
just a little bit of metals and lots of non-metals
only active and strong metals
How many hydrogens "H" are in CH4
1
2
3
4
How many Carbons "C" are in C18H34O3
18
34
3
37
How many Sodium "Na" are in NaCl? (table salt)
1
0
2
3
Which molecular formula only has 12 hydrogens "H"?
C4H10 (butane)
C5H12 (pentane)
C12H22O11 (sugar)
C8H10N4O2 (caffeine)
What is the symbol for hydrogen?
h
H
Hy
HY
What is the symbol for helium
HE
hE
he
He
What is the symbol for oxygen?
O
Ox
o
ox
How many Oxygens "O" are in glucose, C6H12O6
6
12
none
there is no oxygen in the molecular formula
Which box is the most dense?
The one to the far right
The one to the far left
The left middle one
The right middle one
Solid
Liquid
Gas
Solid
Liquid
Gas
Solid
Liquid
Gas
A substance that does not have a definite shape or volume
Solid
Liquid
Gas
A substance with a definite volume but not shape
Solid
Liquid
Gas
A substance whose particles glide past one another
Solid
Liquid
Gas
What is true about ALL chemical changes?
They all produces gas/bubbles/fizzing
They all have a temperature change (hotter/colder)
They all change colors
They all produce NEW and DIFFERENT substances
A teacher shows the class two liquids that are both odorless and clear. When they mix together, solid gold chunks are formed. What change occurred and how do you know?
A chemical change because a precipitate was formed
A physical change because there was a color change
A chemical change because an odor was produced
A physical change because the volume increased when the two liquids were mixed together.
In class, a teacher places a balloon filled with baking soda over a flask filled with vinegar. When the powder falls into the flask and combines with the vinegar, the balloon inflates (fills up with air). What evidence is there that a chemical change occurs?
The powder and liquid combine
A gas is produced that fills up the balloon.
There is no evidence that a chemical reaction to place
The powder stayed solid so it is considered a precipitate
When I go to Chipotle I love to order guacamole. It smells amazing and tastes even better! Unfortunately, sometimes I don't eat it fast enough and it turns brown. Stirring it up hides the brown, but if it sits out longer, it continues to change. What indicates a chemical reaction in this scenario?
The guacamole smells amazing
The guacamole tastes incredible
The guacamole turns a yucky brown color
I stir the guacamole to get rid of the brown
a change that occurs when one or more substances change into an entirely new substances with different properties
chemical change
physical change
evidence
state of matter
a change in a substance's size, shape or state (solid or liquid or gas) to another without a change in chemical composition
precipitate
evidence
chemical change
physical change
The picture shows an experiment in which a student mixed two clear liquids together.
The student can conclude that a chemical change occurred because...
one substance was more dense than the other.
there was no temperature change during the experiment.
a solid formed when the two liquids were mixed.
there was no change in mass during the experiment.
You know that a chemical reaction has occurred if
there is a precipitate (new solid)
there is a color change.
there is a temperature change.
All of these answers are evidence.
Which of the following IS a physical change?
Getting a haircut
Rusty metal
A compound
sour milk
__ is the amount of matter within a certain volume.
Density
Mass
Select an image with the least amount of density
In a jar with 4 layers of different liquids, Which liquid layer would be the most dense.
Top Middle layer
Top Layer
Bottom layer
Bottom middle layer
When the density of a substance is lower than the density of water the substance the substance does what in water?
sink
float
