FUN CHEM MIDTERM REVIEW

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6

Vertical (up and down) columns in the periodic table are called _________ of elements and have similar properties. 

• groups
• periods

The horizontal (left to right) rows on the periodic table are known as

• periods.
• atoms.
• groups or families.
• valence electrons.

What is the chemical symbol for the element Carbon

• ca
• co2
• C
• Cd

• Metals
• Nonmetals
• Metalloids

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

What family is Sodium (Na) a part of?

• noble gases

• Halogens

• Alkali Metals

Which one of these is not a noble gas?

• He

• Rn

• I

• Kr

who discovered the electron

• Dalton

• J.J Thomson

• Lavoisier

• Rutherford

What is the charge of a proton?

• Negative

• Positive

• Neutral