Physical Science 2B CCA 2021-22 Question Preview (ID: 57825)


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The _________ model states that all matter consists of tiny particles in constant random _______.
a) particle, activity
b) wave, motion
c) particle, motion
d) scientific, vibration

Scientists will often refer to the different states as _______.
a) parts
b) particles
c) matter
d) phases

When different substances are mixed so that they have a uniform appearance throughout, a ________ mixture results.
a) heterogeneous
b) pure
c) rare
d) homogeneous

Another term for homogeneous mixture is ___________.
a) suspension
b) colloid
c) solution
d) molecule

_________ is a homogeneous mixture.
a) Salad
b) Tea
c) cereal and milk
d) salsa

The four most common states of matter are solid, liquid, gas (or vapor), and _______.
a) plasma
b) bose condensate
c) sublimation
d) deposition

A __________ mixture does not have a uniform appearance since the substances are unevenly distributed.
a) homogeneous
b) heterogeneous
c) molecular
d) chemical

A chocolate chip cookie is a ______ mixture because the chocolate is not _______ distributed throughout the cookie.
a) heterogeneous, evenly
b) homogeneous, evenly
c) homogeneous, found
d) homogeneous, perfectly

Anything that is not a pure substance is a (an) _______—a physical combination of two or more substances.
a) element
b) compound
c) impurity
d) mixture

he two key aspects of mixtures are (1) that they are only physically combined, not chemically, and (2) that the proportion of substances within the mixture is ________.
a) fixed
b) definite
c) variable
d) unchanging

Atoms of a particular compound ________ combine in the same proportion.
a) rarely
b) always
c) sometimes
d) often

Table salt (sodium chloride, NaCl) is a crystalline compound made of _________ bonded with chlorine.
a) sodium
b) lithium
c) hydrogen
d) Calcium

Classification provides a structure within which we can conduct a ________ study.
a) nominal
b) scientific
c) perfect
d) hypothetical

We classify matter according to its ______________.
a) properties
b) usefulness
c) workability
d) progress

These properties of matter can be physical, ________, or nuclear.
a) visible
b) energy
c) compound
d) chemical

A pure substance is a material made of only one kind of _________ or compound; it is not a mixture.
a) solution
b) electron
c) element
d) proton

An element is a pure substance that consists of atoms with the same atomic _______.
a) mass
b) number
c) weight
d) radius

_______ are the simplest of the pure substances.
a) Elements
b) Compounds
c) Solutions
d) Mixtures

A compound is a pure substance consisting of atoms of ______ or more different elements that are ________ combined.
a) one, chemically
b) two, physically
c) two, chemically
d) three, chemically

The element mercury is a _______ containing only atoms.
a) solution
b) compound
c) solid
d) liquid

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