Decomposition Reactions Types

What does the "thermal" in thermal decomposition mean?

• sulfur

• catalyst

• heat

• oven

What colour is copper(II)carbonate

• white

• blue

• colourless

• green

copper(II)carbonate → ___________ + carbon dioxide

• copper(I) oxide

• copper(II) oxide

• copper oxide

• copper(III) oxide

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What happens when CO₂ is bubbled through limewater

• It changes from pink to blue

• It goes pop

• It goes cloudy

• It gets hot

Tags

NGSS.MS-PS1-2

metal hydroxide (+ heat) → ____________ + _________

• metal carbonate + water

• metal oxide + carbon dioxide

• carbon dioxide + water

• metal oxide + water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What colour is copper (II) oxide

• white

• green

• blue

• black

______________ (+ heat) → zinc oxide + carbon dioxide

• zinc carbonate

• zinc oxide

• zinc dioxide

• zinc hydrogen carbonate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Why does thermal decomposition need heat energy

• to make magic

• to break bonds

• to make water

• to work as a catalyst

Tags

NGSS.MS-PS1-4

A decomposition reaction can be represented as _____________________.

• AB  → A + B
• A + B → AB
• AB + CD → AC + BD
• A + BC → B + AC

Tags

NGSS.MS-PS1-5

This chemical equation for mercury oxide is an example of what type of reaction?
2HgO  → 2Hg + O₂

• decomposition reaction
• synthesis reaction
• combustion reaction
• Marvin the Martian reaction