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# Science Questions - All Grades

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Grade 9 Periodic Table and Elements
Which subatomic particle has a positive charge?
1. proton
2. neutron
3. electron
4. nucleus
Grade 8 Periodic Table and Elements
Lightning is a form of what?
1. force
2. electricity
3. magnetism
Which of the following represents an acid-base neutralization reaction?
1. $AgCl + Na rarr NaCl + Ag$
2. $CH_3COOH + CH_3CH_2OH rarr CH_3COOCH_3CH_2 + H_2O$
3. $2H_3PO_4 + 6LiOH rarr 2Li_3PO_4 + 6H_2O$
4. None of the above
Grade 8 Periodic Table and Elements
Which shows each of the following layers in order from the outermost layer?
1. mantle, outer core, crust, and inner core
2. inner core, outer core, crust, and mantle
3. crust, mantle, outer core, inner core
4. mantle, crust, outer core, inner core
Grade 6 Periodic Table and Elements