EOC

Elements are arranged in rows (periods) and columns (families). Columns are called families because elements in the same family

• do not have similar properties

• have the same atomic number

• have similar properties

• are all made of the same kind of atom

Order the following space objects in order from smallest to largest

• galaxy, star, universe

• star, galaxy, universe

• universe, galaxy, star

• universe, star, galaxy

Tags

NGSS.MS-ESS1-3

This picture shows a student's experiment. Which of the following is true about her variables?

• the independent variable is the one she measures

• the independent variable is the one she changes

• the independent variable is the one she keeps the same for every trial

• the independent variable is not needed in her experiment

Tags

NGSS.MS-PS2-2

Which of the following is not necessary for human to explore other planets?

• a breathable atmosphere

• a way to communicate with Earth

• an adequate supply of food and water

• social media accounts

What is happening at the part labeled #2 in this model of the carbon cycle?

• factories are pumping pollution into the air

• decomposers are consuming carbon dioxide from dead things

• cellular respiration is taking place using sunlight and releasing oxygen

• photosynthesis is taking place, using carbon dioxide from the atmosphere

Tags

NGSS.MS-LS1-6

Which of these is a good way to predict the density of the liquids?

• the color of the liquid determines its density

• the more dense liquids sink to the bottom and the less desnse ones float on top of them

• the least dense liquids sink to the bottom and the more dense ones float on top of them

• the column does give any clues to the density of the liquids

What does the 1.00794 stand for?

• Hydrogen

• atomic number

• atomic mass

• atomic explosion

Tags

NGSS.MS-PS1-1

Which is an electron?

• A

• B

• C

Tags

NGSS.MS-PS1-1

What is the atomic number?

• The number of protons in an element

• The number of neutrons in an element

• The number of protons and neutrons.

• The number of protons and electrons.

Tags

NGSS.MS-PS1-1

Which of the following removes carbon from the atmosphere?

• Combustion

• Respiration

• Photosynthesis

• Death

Tags

NGSS.MS-LS1-6