Georgia S8P1.F

In a reaction A + B ----> C.

Reactant A has 5g and product C has 9g.

How many grams should reactant B have so that this equation is following the Law of Conservation of Matter?

• 4g

• 5g

• 9g

• 14g

Tags

NGSS.MS-PS1-5

How many of each type of atom are in the formula NH₃?

• 1 nitrogen, 3 hydrogen

• 3 nitrogen, 3 hydrogen

• 1 neon, 3 hydrogen

• 1 nitrogen, 3 helium

Tags

NGSS.MS-PS1-1

Why does this picture demonstrate the Law of Conservation of Mass?

• the number of atoms of each element are the same on both sides

• they start out separate and end up combined

• the same elements are used

• it doesn't demonstrate the Law of Conservation of Mass

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which picture below would correctly demonstrate the Law of Conservation of Matter if this picture is showing the reactants?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-5

The coefficient in  3H₂O is

• 6
• 2
• 3
• 5

Tags

NGSS.MS-PS1-1

What is the Law of Conservation of mass?

• Mass is created in a chemical reaction
• Mass is created in a physical change
• New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
• Mass is never created or destroyed

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which are the reactants in the following reaction?

2Mg + O₂ ---> 2MgO

• Mg and O

• MgO

• Mg and MgO

• O and MgO

Tags

NGSS.MS-PS1-2

Which is Chemical Equation is Balanced?

• CH₄+O₂------> CO₂+2H₂O

• H₂+O₂-----> 2H₂O₄

• 4Al+3O₂-----> 2Al₂O₃

• N₂+ H₂ -----> NH₃

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

In the reaction AB-----> A + B reactant AB has 12g and product B has 5g. How many grams should product A have?

• 17g
• 2g
• 7g
• None of the above

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

How many oxygen atoms are in this chemical formula?

• 6 oxygen atoms

• 2 oxygen atoms

• 3 oxygen atoms

• 4 oxygen atoms

Tags

NGSS.MS-PS1-1