Chemical Elements and Properties

Flashcards covering the concepts related to atomic numbers, chemical symbols, and classifications of elements based on their physical state and properties.

Atomic Number

The number of protons in the nucleus of an atom, which determines the element's identity.

Chemical Symbol

A one or two-letter abbreviation for a chemical element.

Phase at Room Temperature

The state in which an element exists (solid, liquid, gas) at approximately 20°C.

Metal

Elements that are typically solid at room temperature, good conductors of heat and electricity.

Non-Metal

Elements that may exist as gases or brittle solids, poor conductors of heat and electricity.

Semimetal

Elements that have properties intermediate between metals and non-metals.

Cr

Chemical symbol for Chromium, a transition metal.

Ni

Chemical symbol for Nickel, a transition metal.

Cu

Chemical symbol for Copper, a transition metal.

Pt

Chemical symbol for Platinum, a dense transition metal.

Au

Chemical symbol for Gold, a highly valued metal.

Hg

Chemical symbol for Mercury, the only metal that is liquid at room temperature.

Rn

Chemical symbol for Radon, a noble gas.

Xe

Chemical symbol for Xenon, a noble gas used in certain types of lamps.

Ba

Chemical symbol for Barium, an alkaline earth metal.

U

Chemical symbol for Uranium, a radioactive metal.