WorksheetsFinal Assessment Grade 6
Total questions: 25
Worksheet time: 50mins
1.True or false: Dissolving is a reversible change. The solid (solute) and liquid (solvent) can be separated.
TRUE
FALSE
Which of these changes are reversible? Choose more than one option.
Sand mixed in water.
Rice mixed in sand.
potato that has been baked.
Salt dissolved in water.
Which description best describes what happens when a material is burnt?
The process is reversible.
The process is irreversible: the original material is destroyed to
produce new
The material being burnt disappears.
The material being burnt always turns completely into a
gas.
Which of these is NOT a reversible change?
Water to Ice
Juice to Popsicle
Cookie Dough to Cookie
Melting Chocolate
When a material can change states and then change back again we say that is process is....
Irreversible
Reversible
Changing
Permanent
When a material changes states and then can't change back again we say that this process is....
Irreversible
Reversible
Changing
Temporary
What is an irreversible change?
Something you can change back.
Something you cannot change back.
What is a reversible change?
Something you can change back.
Something you cannot change back.
Cooking an egg is a..
Irreversible
Reversible
Changes
Melting chocolate is a....
Irreversible
Reversible
Changes
Reversible changes can change back to its original form....
True
False
When orange juice is frozen to make popsicles, can the popsicles change back to orange juice?
Yes
No
Which of these is NOT an irreversible change?
Burning
Melting
Rusting
What is a solid?
Solids have their own shape and size.
Solids take the shape of their container.
Solids spread out to fill space.
Baking a cake is an example of:
a reversible change
an irreversible change
James wants to seperate the salt from the water in his glass of salt water. What seperation method should James use?
Magnets
Evaporation
Filter
Using his hands
Nicole wants to dissolve a substance in water. Which substance will dissolve the easiest?
Rocks
sugar
pepper
sand
What mixture could you use this tool to best separate that mixture?
Sugar and Salt
Sand and rocks
Apples and grapes
A mixtures is a combination of two or more____________ in which no new kinds of matter are formed.
substances
parts
leaves
pebbles
In an exothermic reaction, heat is ...
taken in or absorbed
given out or released
If a chemical reaction is EXOTHERMIC, the temperature would....
Stay the same
Increase
Decrease
After you mix two substances together, a new substance forms. This is an example of:
Physical Change
Chemical Change
A chemical change is different than a physical change because in a chemical change...
Chemicals are used
Molecules do not physically touch
A new substance is formed and in a physical change no new substance is formed
The change can be seen but in a physical change it cannot
If two substances react and the temperature of the mixture increases, the reaction is
Not one that produces anything new
Exothermic
One that needs a catalyst
Endothermic
Which of the following is a chemical reaction?
ice melts
water evaporates
salt dissolves in water
wood burns
