Milestone Science

Atoms of the same element with different numbers of neutrons are called ____.

• isotopes

• radioactive elements

• metalloids

• metals

How are isotopes the same and how are they different?

• Same neutrons different atoms

• In the nucleus

• Same atoms,different neutrons

• Atoms are heaver than isotopes

The diagram shows a graduated cylinder containing water. From which position will the most accurate measure of the volume of water be made?

• Position 1

• Position 2

• Position 3

• Position 4

Which graph represents zero acceleration (constant velocity)?

• A

• B

• C

• D

The table shows the number of neutrons, protons, and electrons for two atoms. How are the two atoms alike?

• They have the same charge.

• They have the same mass number.

• They have the same atomic number

• They are atoms of the same element.

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Elements with seven valence electrons —

• are highly reactive

• are highly stable

• have a high mass

• have a low mass

Sulfur is a nonmetal. Of the following, the physical characteristic that is most likely to describe a sample of sulfur is —

• a shiny appearance

• brittleness

• malleability

• ductility

What law of motion does this picture represent?

• Newtons 1st law

• law of gravity 

• Newtons 4th law 

• Newtons 2nd law

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What Newtons law does this picture represent

• Newtons 2nd law 

• Law of gravity 

• Newtons 1st law

• Newtons 5th law

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A unbalanced force means that an object is 

• zero net force

• changing its motion

• sitting still

• object at rest

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