Word Equations

In a word equation the REACTANTS

• Are written on the right hand side of the arrow

• Are produced in a chemical reaction

• Are always the same

• Are the substances that react together

In a word equation, what should be used when writing the reactants and products?

• Words only

• A mixture of words and chemical symbols

• Chemical symbols only

Iron (a grey metal) reacts with sulfur (a smelly yellow solid) to produce iron sulfide (a black solid).

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Magnesium (a grey metal) can be burned in air to produce magnesium oxide (a white powder). Which is the correct word equation for the reaction that happens?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Nitrogen and hydrogen react together to form ammonia. Give the word equation for the reaction.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the missing word in the equation below?

carbon + oxygen --> carbon _________

• oxyate

• oxide

• oxygen

• dioxide

Tags

NGSS.MS-PS1-1

What is the missing word in the equation below? zinc carbonate --> zinc oxide + _____________________

• carbon

• oxygen

• carbon monoxide

• carbon dioxide

Tags

NGSS.MS-PS1-5

What is the missing word in the equation below?

calcium + oxygen --> calcium _________

• oxyate

• oxide

• oxygen

• dioxide

Tags

NGSS.MS-PS1-5

In a word equation, what does the arrow (→) signify?

• A) The direction of the reaction

• B) The equality of reactants and products

• C) The presence of a catalyst

• D) The temperature of the reaction

Which of the following is a correct word equation for the reaction of sodium with chlorine to form sodium chloride?

• A) sodium + chlorine → sodium chloride

• B) sodium + chlorine → sodium chlorate

• C) sodium + chloride → sodium chlorine

• D) sodium + chlorine → sodium chlorite