STAAR Review

(8.5C 2019 – Q13)

• Group 2

• Group 8

• Group 12

• Group 18

How many valence electrons aarre in an atom of each element in Group 15 in the periodic table? (Record your answer using the correct place value.)

Which pair of properties describes the elements in Group 18?

• They are chemically stable and liquid at room temperature.

• They have eight balence electrons and are flammable.

• They are maganetic and boil at low temeperatures.

• They are gaseous and room temperature and chemically stable.

(8.5D 2019-Q32)

• 1

• 2

• 4

• 5

Tags

NGSS.MS-PS1-1

(8.5D 2017Q-13)

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

(8.6A 2019-Q6)

• F

• G

• H

• J

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

(8.7B 2019-Q27)

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-1

(8.7B 2017-Q31)

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-1

If differences in air pressure produce winds, what can you conclude about temperature and air pressure based on the figure?

• As warm air rises, it creates an area of lower pressure, and cooler air flows in as wind

• Warm air is denser than cold air is, creating an area of high pressure the produces wind.

• Winds flow from areas of low pressure to areas high pressure when temperature is warmer

• Air pressure decreases at night because temperature is lower, producing land and sea breezes

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What is the highest elevation on this map?

• Over 320 meters

• Over 450 meters

• Over 220 meters

• Over 380 meters