Mastering the Periodic Table for 8th Grade Science Success

The video tutorial provides a comprehensive guide to hacking the STAR test using the periodic table and formula chart. It covers atomic structure basics, including atomic number, mass, and the MAN acronym. The tutorial explains valence electrons, groups, and reactivity, as well as periods and reactivity trends. It introduces chemical compounds like glucose and discusses chemical equations using the WRAP acronym. The video also covers subatomic particles and their properties, and concludes with a discussion on the characteristics of metals, metalloids, and non-metals.

What does the atomic number represent?

• Number of neutrons

• Number of protons and electrons

• Atomic mass

• Number of valence electrons

How can you calculate the number of neutrons in an atom?

• Protons + electrons

• Atomic number - protons

• Atomic mass - atomic number

• Atomic mass + atomic number

What does the group number indicate for groups 13 through 18?

• Number of protons

• Atomic mass

• Number of valence electrons after subtracting 10

• Total number of electrons

Which group is known as the most reactive?

• Group 13

• Group 18

• Group 17

• Group 1

What are the noble gases characterized by?

• Being mostly metals

• Having only one valence electron

• Full valence electron shells

• High reactivity

What does the WRAP acronym stand for in balancing equations?

• Water, Reactants, Arrow, Products

• Weight, Reaction, Arrow, Process

• Work, Reactants, Arrow, Products

• Reactants, Arrow, Products

Tags

NGSS.MS-PS1-5

Where are protons located in an atom?

• Outside the nucleus

• In the valence shell

• In the electron cloud

• Inside the nucleus

Which of the following is a property of metals?

• Good insulators

• Shiny luster

• Brittleness

• Poor conductivity

What distinguishes metalloids from metals and non-metals?

• They are only gases at room temperature

• They have properties of both metals and non-metals

• They are poor conductors of electricity

• They are found only in Group 1

Which of the following elements are generally gases?

• Noble gases

• Non-metals

• Metalloids

• Metals