Periodic Table 2

What is reactivity?

• the ability of an atom to combine with another

• measure of electrons

• fusion

• how an element reacts

Which of the following is a characteristic of a metal?

• liquid at room temp

• bad conductor of heat

• bad conductor of electricity

• shiny

How are elements arranged on the periodic table

• by number of neutrons

• by reactivity

• by atomic number

• by atomic mass

Which element is more reactive: aluminum or copper?

• copper

• aluminum

What are the vertical columns called on the periodic table?

• periods

• groups

• columns

• rows

What are the horizontal rows called on the periodic table?

• periods

• groups

• rows

• columns

What do the elements in the same group have in common?

• same number of protons

• same number of electrons

• same number of neutrons

• same number of valence electrons

What do the elements in the same period have in common?

• same number of protons

• same number of electrons

• same number of energy shells

• same number of neutrons

What are valence electrons

• electrons in the outermost energy level

• the electrons that determine an elements reactivity

• the electrons farthest away from the nucleus

• all of the above

Which of the following is a metalloid?

• boron

• aluminum

• sodium

• potassium