Chemistry Revision

Which of the following does NOT form part of an atom

• proton

• neutron

• electron

• photon

Covalent bonds form between

• metals and non-metal atoms

• two metal atoms

• two non-metal atoms

• noble gas atoms

Tags

NGSS.HS-PS1-2

Balance the following reaction :
 
CaC₂(s)   +   H₂O(l)   -->   C₂H₂(g)   +   Ca(OH)₂(aq)

• 1,2,2,2
• 1,2,1,1
• 2,1,1,1
• 2,1,2,1

HCl + NaOH → 

• NaH + ClOH
• NaCl + H₂
• NaCl + H₂O
• NaCl + Cl₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Two Reactants and One Product

• Decomposition
• Combination
• Combustion
• Single Replacement

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water.

• Decomposition

• Combination

• Combustion

• Single Replacement

One reactant into several products.

• Decomposition
• Synthesis
• Combustion
• Single Replacement

Tags

NGSS.HS-PS1-7

What is the type of reaction shown at the top?

• Combination
• Decomposition
• Single Replacement
• Double Replacement

Tags

NGSS.HS-PS1-2

This pictures simulates what type of reaction?

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

Tags

NGSS.MS-PS1-2

KOH + H₃PO₄ --> K₃PO₄ + H₂O

• Synthesis (combination)
• Decomposition
• Single replacement
• Double replacement

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5