Test #1 Review

Which is true about the periodic table trend for atomic radius?

• it stays constant within a period

• it decreases from top to bottom in a group

• it increases from left to right across a period

• it decreases from left to right

Which is true about the periodic table trend for electronegativity?

• it stays constant for all elements

• it increases from top to bottom in a group

• it is higher for metals than non metals

• it increases from left to right

Which of the following have both metal and non-metal properties?

• Neon (Ne)

• Arsenic (As)

• Magnesium (Mg)

• Sulfur (S)

the smallest particle of an element that has all of the properties of the element

• compound

• atom

• neutron

• positron

All atoms of the same element will ALWAYS have

• the same number of neutrons

• the same number of electrons

• the same number of protons

• they are all different

the atomic number is

• the number of protons

• the number of neutrons

• the number of electrons

• the number of protons plus electrons

the atomic mass is

• the number of protons

• the number of neutrons plus protons

• the number of electrons

• the number of protons plus electrons

How many protons neutrons and electrons are in a neutral atom of Boron- 10 (atomic number is 5 and atomic mass is 10)

• 5 protons and 5 neutrons

• 6 protons and 5 neutrons

• 6 protons and 4 neutrons

• 5 protons and 10 neutrons

an ionic compound is almost always composed of

• two metals

• two non-metals

• a metal and a non-metal

a covalent compound is composed of

• two metals

• two non-metals

• a metal and a non-metal