Atomic Theory, Periodic Table, Isotopes

Jane needs a replacement for lithium for a science experiment. She tries silicon, but it does not work. Using what you know about patterns in the periodic table, which advice would you give Jane? (SC.8.P.8.6)

• Try a metal from the alkali metal group.

• Try a non-metal from the noble gas group.

• Try an element in the same group as lithium.

• Try an element in the same period as lithium.

Tags

NGSS.HS-PS1-1

Using a periodic table, determine which of the following pairs of elements would have the most similar properties: (SC.8.P.8.6)

• (H) Hydrogen and (He) Helium

• (N) Nitrogen and (Si) Silicon

• (Ca) Calcium and (Fe) Iron

• (Li) Lithium and (K) Potassium

Use this element from the periodic table to answer the question. (SC.8.P.8.6)

What is the atomic mass for silicon?

• 14.0

• 14.1

• 28.1

• 42.1

Which of the following statements best describes the basic structure of an atom? (SC.8.P.8.7)

• Electrons and protons are in motion around a nucleus that contains neutrons.

• Neutrons are in motion around a nucleus that contains protons and electrons.

• Protons are in motion around a nucleus that contains electrons and neutrons.

• Electrons are in motion around a nucleus that contains protons and neutrons.

Which statement about electrons is true? (SC.8.P.8.7)

• Electrons are much smaller than protons and neutrons.

• Electrons are in the nucleus of an atom.

• Electrons have a positive electric charge.

• Electrons are the largest subatomic particle.

Which of the following comparisons correctly describes subatomic particles? (SC.8.P.8.7)

• An electron has a negative charge and a mass larger than the mass of a proton.

• A neutron has a negative charge and a mass smaller than the mass of a proton.

• A neutron has a neutral charge and a mass larger than the mass of an electron.

• A proton has a positive charge and a mass smaller than the mass of an electron.

What does the atomic mass tell you? 

• Basically,the number of electrons and protons
• The number of neutrons
• Basically, the number of protons and neutrons
• The number of protons.

The horizontal (side to side) rows in the Periodic Table are called

• groups

• families

• periods

• atomic numbers

How many Neutrons does Nickel have?

• 30

• 31

• 28

• 58.693

Which of the following is a good conductor of heat?

• Metal
• Nonmetal
• Metalloid

Tags

NGSS.HS-PS3-4