Which type of mixture is composed of only one phase?
homogeneous mixture
(True or False) The particles of orange juice with pulp are evenly distributed all throughout the medium, making it a good example of a colloid.
False
These are elements that have properties of both metals and non-metals.
Metalloids
Give an example of an element together with its element symbol.
answer may vary
These are compounds which turn a blue litmus paper to red.
acids
Give an example of a compound together with its chemical formula.
answer may vary
How many elements are present in the compound NaHCO3?
4
What colloidal system consists of solid particles dispersed in a gas medium?
solid aerosol
(True or False) Elements are formed when two or more substances are combined together.
False
Ms. Jana asked her students to note down the characteristics of different materials on her table. If the juice provided has pulps, what type of mixture can it be classified?
suspension/heterogeneous mixture
It is a process of separating liquid from a solution based on the differences in the boiling points of the substances.
Distillation
Mixtures of metals and non-metals are best separated using this method.
Use of Magnets
Mixtures with big and fine components can be separated using this technique. It allows the fine particles to pass through the material and prevents larger ones from doing so.
Sieving
It is a method used to separate the components of mixtures using heat- acquiring only the solid components.
Evaporation
(True or False) When two elements are combined to form a compound, they form properties which are different from the ones they originally have.
True
These are combinations of two or more elements that are chemically combined.
compounds
These are made up of one or two kinds of atoms with uniform composition and constant properties all throughout.
Pure Substances
These are substances consisting of combinations of two or more materials, in which each material retains its characteristics.
Mixtures
Give an example of a colloid.
answer may vary
It is a technique used in separating the components of a mixture which should be big enough to be seen and picked up by hands or forceps.
physical manipulation
(True or False) Suspensions are heterogeneous mixtures which are composed of particles that either float or settle at the bottom of the container.
True
(True or False) Solutions are homogeneous mixtures which are composed of only one phase.
True
What type of colloid is formed when liquid dispersed in a liquid?
emulsion
It is a technique used in separating less dense substances from denser ones.
decantation
Insoluble solids are best separated from the liquid components of the mixture using this method.
Filtration
A mixture of glass and water have particles which settle at the bottom. Using this statement, we can conclude that this mixture is a/an ______________.
suspension
(True or False) Physical manipulation is a technique that is best used in separating the components of homogeneous mixtures.
False
Gelatin powder, when mixed with hot water, has particles which are distributed all throughout the medium. What type of colloid is this mixture based on the given information?
sol
It is a technique that separate4s components of mixtures that are based on the ability of each component to be drawn across the surface of another material.
chromatography
Give an example of an element together with its element symbol.
answer may vary
(True or False) Heterogeneous mixtures have particles which completely dissolve in liquid.
False
(True or False) Compounds have elements which are chemically bind together, making it physically possible to separate them.
False
These are combinations of two or more elements that are chemically combined.
compounds
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