Writing Chemical Equations

2H₂ + O₂ ----> 2H₂O What is the product?

• ------>

• 2H₂O

• 2H₂+ O₂

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which is the correct chemical equation for the following: Solid Zn reacts with silver (I) chloride (AgCl) to produce Zinc (II) chloride (ZnCl₂) and silver (Ag) metal

• Zn + AgCl → ZnCl₂ + Ag

• ZnCl₂ + Ag → Zn + AgCl

• ZnCl2 + Ag₂ → Zn + AgCl

• Zn₂Cl + Ag → Zn + AgCl

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which compounds are the PRODUCTS of this reaction?

• CO₂ + H₂O

• C₆H₁₂O₆ + O₂

• C₆H₁₂O₆ + CO₂

• H₂O + O₂

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

NGSS.MS-PS1-2

2H₂ + O₂ --------> 2H₂O What  are the reactants?

• ----->

• 2H₂O

• 2H₂ +O₂

Tags

NGSS.MS-PS1-1

Match the correct part of the chemical equation with its descriptor.

• Yields

• C

• Subscript

• D

• Products

• B

• Coefficient

• A

• Reactants

• E

Tags

SPS3b

In a chemical equation, the arrow points towards the ​ (a)   of the reaction.

• products

• reactants

• elements

• compounds

Number placed in front of a chemical formula is a (a)   and a small number placed after an element is a ​ (b)  

• product

• coefficient

• reactant

• subscript

• superscript

Balance this equation:  

​ ​ (a)   Li + ​ ​ (b)   Cl₂ -> ​ ​ (c)   LiCl₂

• 1

• 3

• 4

• 0

• 2

Tags

NGSS.HS-PS1-7

How many HCl molecules do you need to balance this equation? 2Mg + ​ (a)   HCl ---> 2MgCl₂ + 2H₂

• 4

• 1

• 2

• 3

Tags

NGSS.MS-PS1-5

Label the parts of the chemical equation.

a

b

c

yields

reactant

product