Chemistry: Periodic Table and Elements

What is a property you would expect a metal to have?

• It will not conduct electricity.

• It is dull.

• It is brittle.

• It is malleable.

What pair of elements are in the same PERIOD?

• Scandium (21) and Bromine (35)

• Scandium (21) and Yttrium (39)

• Helium (2) and Neon (10)

• Iodine (53) and Astatine (85)

What element below is in the same GROUP as Aluminum (13)

• Sodium (11)

• Thallium (81)

• Silicon (14)

• Argon (18)

What is a metalloid?

• A subtype of metal that is very shiny.

• A mixture of two metals.

• An element that has properties of both metals and nonmetals.

• An element that behaves exactly like a nonmetal.

What statement below is true about the periodic table?

• The heavier the element, the more likely it is to be a gas.

• Elements in the same PERIOD share similar properties.

• Elements in the same GROUP share similar properties.

• Elements are arranged by date of discovery, from earliest to most recent.

Selenium has atomic number of 34, what does this tell us?

• It has a mass of 34.

• It has 34 protons.

• It has 34 neutrons.

• It was the 34th element discovered.

How many electrons are in a NEUTRAL atom of boron?

• 5

• 6

• 10

• 11

What particles are found in the nucleus of an atom?

• Protons and electrons

• Electrons and neutrons

• Protons and neutrons

• Protons, neutrons and electrons

What does it mean for a substance to be ductile?

• It can be bent easily.

• It can be turned into a wire.

• It can be shattered easily.

• It conducts electricity well.

What types of elements can be solid, liquid or gas at room temperature?

• Metals

• Metalloids

• Nonmetals

• Isotopes

Tags

NGSS.MS-PS1-4