WorksheetsAssessment Test 3 iPrimary Science
Total questions: 50
Worksheet time: 29mins
_____ have molecules that are packed together and hardly move.
solids
liquids
gases
plasma
____ have a definite volume and molecules that are spread out and can move past one another.
solids
liquids
gases
plasma
____ have molecules that can spread out far from each other and move quickly.
solids
liquids
gases
plasma
____ keep their size but not their shape.
solids
liquids
gases
plasma
_____is the universal solvent.
Water
Liquid
Solid
Oxygen
You cannot change shape of ______by pressing it, or cut it easily.
Hard Material
Soft Material
Rough Material
All of the above
Houses, furniture's, axe hammer shaft are example of _______________________.
Metals
polyster
ceramics
wood materials
Fiber
This method separates dissolved substances based on differences in how well they dissolve in a solvent.
Filtration
Evaporation
Distillation
Chromatography
Substances in a mixture can be separated by physical methods.
TRUE
FALSE
This method separates substances due to differences in the sizes of their particles.
Filtration
Evaporation
Distillation
Chromatography
If a substance is insoluble in water, it ___________.
dissolves in water
cannot dissolve in water
forms a solution when mixed with water
cannot be separated from water
This is used to pour lab materials into an object with a small opening
scoop
funnel
bunsen burner
goggles
This is called_______________________?
Connical Flask
Test Tube
Safety Gloves
Thermometer
I am left behind in the filter paper ]. What Am I?
Filtrate
Solution
Residue
The part of the mixture that passes through the filter paper is called the
residue
filtrate
suspension
Burning of candle wax is a ________change
Reversible change
Irreversible change
Melting of butter is a _______________ change
Reversible change
Irreversible change
Frying an egg to make an omelette is a _______________ change
Reversible change
Irreversible change
Substances that are made up of ONLY one type of atom (element) or compound.
Heterogeneous mixture
Pure substance
Suspension
Homogeneous mixture
Which of these is an element?
Salt (NaCl)
Water (H20)
Oxygen (O)
Carbon Dioxide (CO2)
Which of these is a compound?
Aluminium (Al)
Carbon Dioxide (CO2)
Nitrogen (N)
Sand
Identify which images are HETEROGENEOUS MIXTURES! (Check all that apply)
Why is salad not a solution?
because it's an element
because it's a compound
because it's a heterogeneous mixture
because it's a homogeneous mixture
Which part of the solution does the dissolving?
solute
solution
solvent
Which part of the solution is dissolved?
solute
solution
solvent
What is another name for a solution?
an element
a compound
a heterogeneous mixture
a homogeneous mixture
anything that emits or causes sound
sound
source
light
medium
a disturbance that needs to travel into something
light
sounds
source
medium
where sound waves can be transferred
medium
source
frequency
detector
The more force put into the pulse (which starts the sound) the greater the ______________ of the sound. Therefore, the sound will be louder.
Higher
Lower
Mid-Higher
The number of waves produced per second
Frequency
Wavelength
Amplitude
True or False, Sound travels in Transverse waves.
True
False
A sound is a form of?
energy
pitch
volume
Two sound waves of different frequencies interfere and produce a resulting waveform shown with four points (W, X, Y, and Z) marked on the new wave.
At which point will the sound be the loudest?
W
X
Y
Z
