Second Semester Practice II Question Preview (ID: 37662)
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A scientist knows that a pure substance has six protons in the nucleus of each of its atoms. Which of the following can the scientist conclude?
a) The pure substance has a positive charge.
b) The pure substance has a negative charge
c) The pure substance can be identified as a metal.
d) substance can be identified as a specific element.
In the electron cloud model of the atom, what does the electron cloud contain?
a) electrons and protons
b) electrons and neutrons
c) electrons and a little empty space
d) electrons and a lot of empty space
What particle in an atom's nucleus has no charge?
a) proton
b) newton
c) neutron
d) electron
Which measurement changes when an object is taken from Earth to the moon?
a) mass
b) weight
c) density
d) volume
A chemical change differs from a physical change because in a chemical change a substance
a) changes color.
b) changes shape
c) changes into another substance.
d) changes into another state of matter
Which choice below best describes water vapor?
a) gas above boiling water
b) particles of water under extreme pressure
c) gas with electric charges that comes from heating water
d) little drops of condensed water found on glasses of iced drinks in the summer
When a substances particles are moderately spread apart and can slide past each other, what state of matter is the substance.
a) gas
b) solid
c) liquid
d) plasma
A metalworker takes a piece of copper and shapes it by pounding it with a hammer. Which of the following best describes the property the metalworker used?
a) The copper is ductile, which is a physical property.
b) The copper is ductile, which is a chemical property.
c) The copper is malleable, which is a physical property.
d) The copper is malleable, which is a chemical property.
One container (A) has liquid with an object at the bottom, another (B) has the same liquid but an object is at the top. What can you determine about the density of the objects?
a) Container A's object is denser than B's.
b) Container B's object is denser than As.
c) You cannot compare the two without more information
d) The density of the objects are the same.
The amount of space an object takes up is its
a) mass
b) height
c) density
d) volume
A substance's melting point is the same as its
a) boiling point.
b) freezing point.
c) chemical point
d) evaporation point.
How is plasma different from gas?
a) The particles in plasma are magnetic.
b) The particles in plasma have a set volume.
c) The particles in plasma have electric charges.
d) The particles in plasma can break away from each other.
In which state of matter do particles move the slowest?
a) gas
b) solid
c) liquid
d) plasma
Which statement describes a chemical property of an object?
a) Iron is malleable.
b) Water is colorless.
c) Wood is flammable.
d) Copper is a conductor.
Which object has the greatest density?
a) twenty kilograms of cement
b) twenty kilograms of feathers
c) twenty kilograms of paperclips
d) twenty kilograms of plastic bottles
What physical property of matter can you measure with cubic centimeters?
a) mass
b) length
c) density
d) volume
When does hail form?
a) when the temperature directly beneath clouds is freezing
b) when rain falls through a thick layer of freezing air that freezes the rain
c) when rain falls through cold air and then freezes upon hitting Earth's surface
d) when wind tosses ice crystals up and down inside cumulonimbus clouds
A volcanic eruption can change the climate by
a) making Earth cooler by increasing the amount of oxygen
b) making Earth warmer by trapping heat on Earth's surface.
c) making Earth warmer by burning the Earth's surface with ash and lava
d) making Earth cooler by blocking sunlight with ash and other materials.
Why do meteorologists use satellites to help them predict the weather?
a) The satellites can gather information about specific, local weather conditions.
b) The satellites can use radio waves to measure wind speed and precipitation to map storm paths.
c) The satellites can gather information about weather conditions all over the world at the same time.
d) The satellites are the only weather instruments that can quickly gather information from the troposphere.
If an air mass forms over a desert in the southern United States, what will its temperature and moisture be like?
a) The air mass will be hot and dry.
b) The air mass will be cool and dry.
c) The air mass will be hot and moist.
d) The air mass will be cool and moist.
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