Periodic table and reactivity

Select the phrase that identifies where METALS are found on the periodic table

• on the zig-zag line and some are good conductors.

• on the right of the zig-zag line and some are brittle.

• on the left of the zig-zag line and they are mostly solid and shiny.

• on the left and right sides of the zig-zag line.

According to the diagram, which list represents elements that share the most similar chemical properties?

• O, Se, and Kr

• Se, Cl, and Ne

• S, Cl, and Ar

• Ne, Ar, and Kr

Tags

NGSS.MS-PS1-2

Which two groups on the Periodic Table are the MOST reactive?

• Group 1 and Group 17
• Group 2 and Group 16
• Group 13 and Group 15
• Group 17 and Group 18

What determines the reactivity of an element?

• Size of its nucleus
• Number of total electrons
• Number of valence electrons
• Number of shells

A student has to select an element that is a poor conductor of heat and electricity. Which element should they choose?

• Br

• Cd

• Na

• Ti

Tags

NGSS.MS-PS3-3

What are the most likely positions of element A and element B on the periodic table?

• Both elements A and B are on the left of the periodic table.

• Both elements A and B are on the right of the periodic table.

• The element A is on the left of the periodic table, and element B is on the right of the periodic table.

• The element A is on the right of the periodic table, and element B is on the left of the periodic table.

An element with five valence electrons is

• phosphorus (P)

• oxygen (O)

• beryllium (Be)

• rubidium (Ru)

Looking at the periodic table what other element reacts in a similar way to Si?

• Al (Aluminum) because it is on the same period.

• P (Phosphorus) because it has more protons.

• C (Carbon) because it is in the same group.

Which answer choice best describes the element sodium (Na)?

• It is in group 3, period 5, and has 2 valence electrons.

• It is in group 1, period 3, and has 1 valence electron.

• It is in group 13, period 1, and has 5 valence electrons.

Which element is the least reactive?

• Tin (Sn) because it only has 4 valence electrons.

• Gallium (Ga) because it only has 3 valence electrons.

• Chlorine (Cl) because it only has 7 valence electrons.

• Neon (Ne) because it only has 8 valence electrons.

Tags

NGSS.MS-PS1-1