Semester 1 Chemistry Recap

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

An atom with atomic number 6 would have how many protons?

• 6

• 12

• 3

• cannot be determined

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Tags

NGSS.HS-PS1-8

How many neutrons does an atom of the isotope Neon-22 have?

• 12
• 10
• 22
• 20

Tags

NGSS.HS-PS1-8

An atom is electrically neutral when

• protons and neutrons are the same
• protons and electrons are the same
• neutrons and electrons are the same
• neutrons balance the protons and electrons

Which of these is not a metal?

• Lithium

• Aluminium

• Copper

• Sulfur

Which of these elements is a Noble gas?

• Neon

• Oxygen

• Nitrogen

• Aluminium

Tags

NGSS.HS-PS1-1

Which of these elements is not in the halogen group?

• Fluorine

• Bromine

• Caesium

• Iodine

Which of the following belongs to the transition metals?

• Ba

• S

• Cu

• Al

Valence electrons are the...

• Innermost electrons
• Middle electrons
• Outermost electrons
• Any electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2