NEW
Font size
WorksheetsWhat I Know
Total questions: 15
Worksheet time: 5mins
What are the two (2) classes of matter?
atom and molecule
element and compound
plant and animal cells
substance and mixture
Which is true regarding water?
compound of element
element of gases
mixture of gases
substances of gases
What is the difference between a substance and a mixture?
Substance can be separated while mixture cannot be separated.
Substance has many components while mixture has one only.
Substance is heterogeneous while mixture is homogeneous.
Substance is pure while mixture is impure.
To separate salt from water in a seawater mixture, what process is used?
condensation
distillation
evaporation
filtration
Which of the following is a property of mixture?
It has a definite composition.
It consists of a single phase.
It has a heterogeneous composition.
It can be chemically separated into its components.
Which of the following is a physical appearance of a substance?
complicated
homogeneous
heterogeneous
non-uniform
Which one is the best way to determine whether an unknown sample is a
substance or a mixture?
Knowing its density
Tasting the given sample
Observing its physical appearance
Testing its melting and boiling point
Which is NOT a technique to separate components of mixture?
condensation
distillation
evaporation
.
filtration
Which of the following is a heterogeneous mixture?
air
oil in water
stainless steel
soft drink
What is/are true for substance and mixture? I. Pure substance melts completely.
II. Pure substance has a varying boiling point.
III. Mixture does not melt completely.
IV. Mixture has a fixed boiling point.
I and II only
I and III only
II and IV only
I and IV only
What does it indicate when a sugar is heated in a test tube until it is
completely changed into a black mass and droplets of water?
compound
element
mixture
solution
What substance is made by mixing two elements without being chemically
combined?
compound
element
mixture
solution
What is the best way to use in separating iron parts from a mixture?
filter paper
magnet
water
spoon
Which of the following uses evaporation as a means of separating the
components of the given mixture?
iron fillings and sand
pebbles and water
sand and gravel
sugar and water
Which of the following statements distinguishes pure substances from
mixtures?
It can be separated by physical means.
It consists of two or more kinds of matter.
It has no specific solubility and densities.
It has constant boiling temperature and melting temperature.
