Chemistry mini-test

a collection of atoms of one type that cannot be broken down into simpler substances by ordinary chemical or physical means

• element

• subatomic particle

• electron

• matter

the positively charged subatomic particle contained in the nucleus of an atom

• proton

• neutron

• electron

• matter

a subatomic particle, contained in the nucleus of an atom, having the same mass as a proton but no electrical charge

• proton

• neutron

• electron

• matter

an arrangement of the elements according to their atomic numbers so that elements with similar properties are in the same column and properties repeat from row to row

• Periodic Table of Elements

• Atomic Theory

• Isotopes

• Subatomic Particles

a row on the Periodic Table of Elements

• family

• period

• row

• isotope

a grouping of elements based on similar properties, arranged by columns in the periodic table; also known as a group

• family

• period

• row

• isotope

GOLD

• Al
• Ag
• Ar
• Au

Tags

NGSS.MS-PS1-4

CHLORINE

• C
• Ca
• Cl
• Cu

How many different elements are in this chemical formula: C₂H₂ClK₃

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

Which of the following atomic symbols for bromine is written correctly?

• bR
• BR
• Br
• br