PERIODIC TRENDS part 1 cp 21-22

PERIODIC TRENDS part 1 cp 21-22

By Lindsay Ando

Multiple Choice

Who arranged the known elements into horizontal rows of increasing atomic mass leaving gaps for as yet undiscovered elements?

• Mendeleev

• Meyer

• Newlands

• Moseley

Multiple Choice

Who suggested that the physical and chemical properties were related to the atomic number, rather than atomic mass?

• Meyer

• Mendeleev

• Moseley

• Newlands

Multiple Choice

Why were there blank spaces left in Mendeleev's periodic table?                                              

• He didn't know what to put there.
•  Undiscovered elements not yet known.
• Multiple elements could have fit
• He forgot to add the elements in.

Multiple Choice

In the modern periodic table elements are arranged by:

• atomic mass

• atomic number

• valence electrons

• number of isotopes

Multiple Choice

The vertical columns on the periodic table are called:

• periods

• elements

• groups

• matter

Multiple Choice

The horizontal rows on the periodic table are called:

• periods

• elements

• groups

• matter

Multiple Choice

Which group are the Halogens in?

• 1

• 2

• 17

• 18

Multiple Choice

How many valence electrons does magnesium have?

• 1

• 2

• 3

• 4

Multiple Choice

Why do atoms gain or lose electrons and form ions?

• To have no electrons

• To achieve a stable octet

• To have 2 valence electrons

• To be neutral

Multiple Choice

What charge will oxygen have when it forms an ion?

• +2

• +3

• -2

• -1

Multiple Choice

How many valence electrons does nitrogen have?

• 3

• 4

• 5

• 6

Multiple Choice

When sodium forms an ion, what charge will it have?

• +1

• +2

• -3

• -2

Multiple Choice

Ions that lost electrons have a _____________ charge and ions that gained electrons have a _____________ charge.

• Negative, positive

• Neutral, negative

• Positive, negative

• Positive, neutral

Multiple Choice

The valence electrons are located on 

• the energy level closest to the nucleus

• the energy level furthest from the nucleus

• the energy level with the most electrons

• the energy level with the least electrons

Multiple Choice

As you move down a group, shielding 

• increases because there are more  energy levels

• increases because there are more protons
• decreases because the atomic radius increases
• stays constant because the number of valence electrons stays the same

Multiple Choice

As you move across a period (row), the shielding effect

• increases by a factor of 2
• decreases by a factor of 2
• stays constant
• alternates for metals an nonmetals

Multiple Choice

Which of the following elements has the largest shielding effect?/

• Li
• Na
• K
• Rb

Multiple Choice

Coulombic Attraction is the attraction between __________ charged particles.

• same 
• oppositely
• two positively
• two negatively

Multiple Choice

nuclear charge __________ across a period because the number of protons ______

• increases

  increases

• increases

  decreases

• decreases

  decreases

• decreases

  increases

Multiple Choice

An example of Coulombic Attraction in an atom is between

• protons and neutrons
• neutrons and electrons
• protons and electrons
• protons and protons

Multiple Choice

If distance remains the same, as the number of protons increases, the force of attraction

• remains the same
• increases
• decreases
• is divided by 1/2