SNC 2P Grade 10 Applied Science: Chemistry

Identify this type of reaction:

Al (s) + HCl (aq) → AlCl₃ (aq) + H₂ (g)

• DDR

• Synthesis

• Combustion

• SDR

The following reaction is an example of what reaction type? 
CoCO₃ → CoO + CO₂

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

Combustion reactions will always involve

• Carbon and heat/energy

• Nitrogen and heat/energy

• Oxygen (O₂) and heat/energy

• Water and heat/energy

Which of the following is an example of synthesis?

• Na + Br₂ --> NaBr
• KClO₃ --> KCl + O₂
• HgO + Cl₂-->HgCl + O₂
• Cl₂ + NaBr --> NaCl + Br₂

Which of the following is an example of decomposition?

• Na + Br₂ --> NaBr
• KClO₃ --> KCl + O₂
• HgO + Cl₂-->HgCl + O₂
• Cl₂ + NaBr --> NaCl + Br₂

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

• 3
• 9
• 7
• 5

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

Each column in the periodic table is called a 

• period
• group
• cluster
• unit

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Tags

NGSS.MS-PS1-1

How many Valance electrons does Iodine Have?

• 6
• 16
• 7
• 17

Tags

NGSS.MS-PS1-1