Chemical reactions

Which of the following models best demonstrates a balanced chemical equation?

• F

• G

• H

• J

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The formula below represents the most common carbohydrate known as glucose. Which information can be determined from the chemical formula?
C₆H₁₂O₆

• The structural arrangement of the atoms in a glucose molecule
• The color of a glucose molecule
• The size of a glucose molecule
• The number of atoms of each element in a glucose molecule

Tags

NGSS.MS-PS1-1

In which of these compounds are there twice as many oxygen atoms as hydrogen atoms?

• H₃PO₄
• H₂SO₄
• HCIO₃
• H₂0

Tags

NGSS.MS-PS1-1

Which ones does not show evidence of a chemical reaction?

• colour change

• production of gas

• production of heat

• production of light

• change in physical state- ie. crushing of a can, shredding paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A molecule made of 2 atoms is called a ____________________.

• Diatomic Molecule
• Chemical Bond
• Product
• Reactant

Tags

NGSS.MS-PS1-1

What type of reaction involves the breaking down of a substance into simpler substances?

• Single Displacement Reaction
• Double Displacement Reaction
• Synthesis Reaction
• Decomposition Reaction

Tags

NGSS.MS-PS1-2

What type of reaction involves 2 substances combining to form 1 new compound?

• Decomposition Reaction
• Single Displacement Reaction
• Double Displacement Reaction
• Synthesis Reaction

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of reaction involves one element replacing another element in a compound?

• Single Displacement Reaction
• Double Displacement Reaction
• Synthesis Reaction
• Decomposition Reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of reaction involves ions from 2 compounds exchanging places to form 2 completely new compounds?

• Single Displacement Reaction
• Double Displacement Reaction
• Synthesis Reaction
• Decomposition Reaction

What is the large number written before a chemical formula called?

• Coefficient
• Subscript
• Reactant
• Product

Tags

NGSS.MS-PS1-5