Phy Sci Ch 2 Part 1 Question Preview (ID: 16063)

Phys Sci Ch 2 Part 1. TEACHERS: click here for quick copy question ID numbers.

Which of the following are pure substances?
a) solutions
b) compounds
c) homogeneous mixtures
d) colloids

Which of the following is NOT a pure substance?
a) milk
b) oxygen
c) water
d) carbon dioxide

A substance that is made up of only 1 kind of atom is a(n)
a) compound
b) homogeneous mixture
c) element
d) solution

If an unknown substance CANNOT be broken down into simpler substances, it is
a) a compound
b) an element
c) made of one kind of atom
d) both element and made of one kind of atom

If a material contains three elements joined in a fixed proportion, it is a(n)
a) mixture
b) solution
c) atom
d) compound

Water is a compound because it
a) can be broken down into simpler substances
b) always has 2 H atoms for each O atom
c) is made of water atoms joined together
d) both - can be broken down into simpler substances and has 2 H and 1 O

Which of the following is a characteristic of a mixture?
a) has varying properties
b) has a fixed composition
c) contains only pure substances
d) both - has varying properties and has a fixed composition

Which of the following is a heterogeneous mixture?
a) water in a swimming pool
b) sugar water
c) a jar of mixed nuts
d) stainless steel

A mixture can be classified as a solution, suspension, or colloid based on the
a) number of particles it contains
b) size of its largest particles
c) color of its particles
d) size of its smaller

Which of the following is malleable?
a) glass
b) pottery
c) ice
d) gold

Which of the following has the highest viscosity?
a) corn syrup
b) milk
c) water
d) orange juice

A substance has a melting point of 0 C and a boiling point of 100 C, The substance is most likely
a) water
b) hydrogen
c) gold
d) table salt

A material that is malleable and conducts electricity is most likely
a) wood
b) ice
c) a metal
d) motor oil

What physical properties of nylon and leather make them good materials to use for shoelaces?
a) high density and low conductivity
b) durabilitiy and flexibility
c) hardness and flexibility
d) low viscosity and flexibility

Which of the following materials is useful for making molds because it has a low melting point?
a) wood
b) metal
c) clay
d) wax

Filtration can be used to separate mixtures based on
a) their boiling points
b) their densities
c) their melting points
d) the size of their particles

What method can be used to separate parts of a liquid mixture when the entire mixture can pass through a filter?
a) filtration
b) distillation
c) straining
d) screening

When a physical change in a sample occurs, which of the following does NOT change?
a) shape
b) temperature
c) volume
d) composition

Which of the following is a physical change?
a) sawing a piece of wood in half
b) burning a piece of wood
c) rust forming on an iron fence
d) a copper roof changing color from red to green

Flammability is a material's ability to burn in the presence of
a) hydrogen
b) nitrogen
c) oxygen
d) carbon dioxide

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