Worksheetsgrade 5 , con 6 , lesson 3&4
Total questions: 20
Worksheet time: 10mins
Among mixtures which are made up of solid materials only is the mixture of.........
salt and water.
sand and rocks.
suagr and water.
oxygen and helium.
Salt can be separated by ..... of salty water.
melting
evaporation
freezing
condensation
By adding baking soda to vinegar, a............ is formed.
powder
compound
mixture
solid matter
By adding iodine to starch, the color of the formed compound will change into..........
dark blue.
dark green.
orange.
yellow.
If we mix two equal masses of salt and oil so, their total mass will ...............after mixing.
equal to zero
decrease
increase
not change
To separate sand only from salty water, we can use ..........process.
filtration
evaporation
melting
freezing
A compound has all the following properties, except that its components...........
combine chemically.
form new substance.
change in their shapes
do not change chemically or physically.
The.......... of iodine will not change after mixing it with starch.
mass only
color only
color and mass
properties and mass
If we have 6 g of water and 6 g of sugar, after mixing them the mass of whole mixture will be..............g
15
10
12
6
If we mix 150 g of banana with 50 g of apple, the mass of banana only will be .............g after mixing.
50
100
200
150
Iron nail will rust when it reacts with...............
carbon dioxide and water.
carbon dioxide and vinegar.
oxygen and vinegar.
oxygen and water.
Burning of a paper is considered as ...........change of matter.
only chemical
only physical
both physical and chemical
neither physical nor chemical
Among examples of physical changes is.......
melting of iron.
burning of wood.
making a cake.
digestion of food
Among chemical unexpected color change is the color that is produced from mixing...........
baking soda with vinegar.
iodine with cornstarch.
food colors with water.
salt with water.
From the changes that don't form a new substance is..............
burning of paper.
cutting of wood.
baking bread.
rusting of iron.
All the following examples belong to physical changes, except...........
cutting a piece of paper.
melting of ice.
digestion of food.
condensation of water vapor.
The change that is produced as a result of iron rusting is the same change produced from............
melting of ice.
making bread.
cutting a piece of cloth.
breaking of glass.
Exposing an amount of salty water to sunlight for a long time causes.........
freezing of water.
formation of a new substance.
a chemical change to water.
a physical change to water.
When oxygen combines with carbon and hydrogen,.......... energy is produced
electrical
thermal
kinetic
solar
Among chemical changes that occurs in cooking is.............
cutting vegetables.
boiling of water.
melting of chocolate.
baking a bread.
