STAAR Review for Science

Which statements correctly compare metals and nonmetals?

• F

• G

• H

• J

Tags

NGSS.MS-PS3-3

Click on the visual for the question.

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Tags

NGSS.MS-PS1-1

Based on the data given, the unknown metal is most likely--- (a)  

• Iron, Fe

• Gold, Au

• Silver, Ag

• Tin, Sn

Tags

NGSS.MS-PS1-2

Click on the image for the question.

• F

• G

• H

• J

Click on the image for the question.

• F

• G

• H

• J

Tags

NGSS.MS-PS1-5

Which substance listed in the chart is made up of the most atoms?

• Carbonic acide

• Nitric acid

• Phosphoric acid

• Sulfuric acid

Tags

NGSS.MS-PS1-1

Based on these properties, which element is most likely a nonmetal?

• Element 1

• Element 2

• Element 3

• Element 4

Tags

NGSS.MS-PS1-2

A student is trying to classify an unidentified, solid gray material as a metal or a nonmetal. Which question will best help the student classify the material?

• F

• G

• H

• J

Which statements best describe the charges on the particles in this model?

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Tags

NGSS.MS-PS1-1

If a fluorine atom has a mass number of 19, how many neutrons are in the atom?

Mathematical Equivalence

ON

Answer explanation

The mass is the total number of protons & neutrons. The atomic number is the number of protons only.

M.A.N.

atomic Mass - Atomic # = # of neutrons.