Chemical Equations & Conservation of Mass

Is this equation balanced?

• yes
• no
• Not enough information

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this equation balanced?

• yes
• no
• Not enough information

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Substance that cannot be broken into simpler substances

• element
• molecule
• gram
• proton

Substance made up of chemically combined elements

• atom
• element
• electron
• compound

Tags

NGSS.MS-PS1-1

Substances that form as the result of a chemical reaction

• products
• reactants
• coefficients
• subscripts

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Substances present at the start of a chemical reaction

• subscripts
• coefficients
• reactants
• products

Tags

NGSS.MS-PS1-1

Is this chemical equation balanced?
2Na + Cl₂ ----> 2NaCl

• Yes
• No

Tags

NGSS.MS-PS1-5

The total amount of matter (atoms) before and after a chemical reaction remains the same.

• True
• False

Tags

NGSS.MS-PS1-5

Which are the reactants in the following reaction?
2Mg + O₂ ---> 2MgO 

• Mg and O
• MgO
• Mg and MgO
• O and MgO

Tags

NGSS.MS-PS1-1

 Mg  +  ___ HCl  →   MgCl₂  +   H₂

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5