Periodic Table Quiz

Use the periodic table below to answer the question. How many protons does chromium (Cr) have?

• 24

• 25

• 52

• 20

Use the periodic table below to answer the question. How many electrons does nitrogen (N) have?

• 14

• 7

• 11

• 22.9

Tags

NGSS.MS-PS1-1

Read the passage and use the diagram to answer the question. The diagram depicts a model of an atom. No individual subatomic particles are shown. Only the electron shells, or energy levels, and the nucleus are shown. Look at the model, which shows three electron shells of an atom without any electrons. If the valence shell has six electrons, what is the atomic number of the atom?

• 6

• 8

• 10

• 16

Tags

NGSS.MS-PS1-1

Use the diagram below to answer the question. Use the correct words to complete the sentence. The melting of ice cream requires more _______________ from the surroundings than it releases, this is an ____________________ process.

• energy, exothermic

• energy, endothermic

• Water, exothermic

• Water, endothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why do ionic bonds form?

• So the number of protons equals the number of electrons.

• To stabilize the atom with a full outer shell.

• So an atom can become unstable.

• So atoms will stick together to form molecules.

Which of the choices cannot be recycled?

• Plastic bag

• Empty glass bottles

• Banana peelings

• Old clothes

Composting is a method for recycling (a)   into a rich, dark soil amendment called compost. Anything that was once alive will be decomposed by fungus, bacteria, and invertebrates, such as worms, if exposed to air and water.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the final stage in the life cycle of a low-mass star?

• neutron star

• White Dwarf

• black hole

• supernova

What is the name given to the explosion of a high-mass star?

• supernova

• hypernova

• superstar

• stellar explosion

A star is born and lit up  when ______ happens and provides the star with energy that it will use for millions of years.

nuclear fusion

gravity

hydrogen

iron

• nuclear fusion

• gravity

• hydrogen

• iron

Tags

NGSS.HS-ESS1-1