Doc's Law of Conservation of Mass Practice

How many elements are in the following formula?

BaBr₂

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

Match each element with the number of atoms it has in this compound

Na₃C₆H₅O₇

• 5

• H

• 7

• Na

• 0

• Ca

• 6

• C

• 3

• O

Tags

NGSS.MS-PS1-1

The chemical formula for an antacid is CaC0_3.

_{How many elements are in the formula for antacids?}

Tags

NGSS.MS-PS1-1

Groups:

(a) Reactants

,

(b) Products

• CH₄

• 2H₂O

• CO₂

• 2O₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many elements are in 2 C₆H₁₂O₇? (a)  

How many atoms of C: ​ (b)  

How many atoms of H: ​ (c)  

How many atoms of O: ​ (d)  

How many TOTAL atoms: ​ (e)  

• 3
• 12
• 24
• 14
• 50
• 7
• 6
• 25
• 52
• 60

Tags

NGSS.MS-PS1-1

• Yes

• No

Tags

NGSS.MS-PS1-5

Mathematical Equivalence

OFF

Tags

NGSS.MS-PS1-5

• Yes

• No

Tags

NGSS.MS-PS1-5

How many atoms of oxygen are in this compound?

Cu(ClO₄)₂

Mathematical Equivalence

OFF

Tags

NGSS.MS-PS1-1

The law of conservation of mass says the bonds between atoms are​ (a)   to form new substances with new properties.

• fused

• created

• destroyed

• broken and rearranged

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5