writing of symbol equation

10.8.writing of symbol equation

writing the formula of elements ^,

• the formula of metal like the symbol (single atom )Na ,Mg ,Al

• the formula of nonmetal depends on the state of matter

• solid non-metal can be (single atom) C,

• liquid non metal (diatomic ) Br₂

• gas non metal (diatomic ) N₂

Open Ended

what is the chemical formula of sodium

Open Ended

what is the chemical formula of chlorine

Open Ended

what is the chemical formula of oxygen

Open Ended

calcium

Open Ended

carbon

Open Ended

Iodine

Open Ended

magnesium

Open Ended

copper

Open Ended

potassium

the formula of compound depends on valency(oxidation no.) of its elements

Multiple Choice

Element or compound?

O₂

• Element

• Compound

Multiple Choice

Element or compound?
O₂

• Element
• Compound

how to write the formula of compound ?

Multiple Choice

What is the chemical formula of Magnesium chloride?

• MgCl

• MgCl₂

• MgC

• MgC_2

Multiple Choice

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Multiple Choice

How many carbon atoms (C) are in a CO₂ molecule?

• 1
• 2
• 3
• 0

Multiple Choice

How many Hydrogen atoms (H) are in a molecule of H₂O?

• 1
• 2
• 3
• 0

Multiple Choice

How many elements are represented in the products in the equation?

• 2

• 3

• 4

• 5

Multiple Choice

How many atoms are represented in the reactants in the equation?

• 6

• 7

• 4

• 5

Multiple Choice

Balance this equation.
_Mg + _Cl₂ --> _MgCl₂

• 1, 2,1
• already balanced
• 2,1,1
• 1,1,2

Multiple Choice

Write a complete balanced reaction for the following.
Calcium metal reacts with oxygen gas to form a solid

• 2 Ca (s) + O₂ (g) --> 2 CaO (s)
• 2 Ca (s) + 2 O (g) --> 2 CaO (s)
• Ca (s) + O₂ (g) --> 2 CaO (s)
• Ca (s) + O₂ (g) -->  CaO₂ (s)

Multiple Choice

What is the right part of a chemical equation called...
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Multiple Choice

When hydrogen reacts with sulfur, a smelly gas is produced:

• H₂(g) + 2S(s) → 2HS
• H₂(g) + S(s) → H₂S(g)
• H(g) + S(s) → HS(g)
• 2H(g) + S(s) → H₂S(g)

Multiple Choice

Iron reacts with sulfur to produce iron(II) sulfide powder.

• 2Fe(s) + S(s) → Fe₂S(s)
• Fe(s) + S(s) → FeS(s)
• Fe(s) + S(g) → FeS(s)
• 4Fe(s) + S₂(g) → 2Fe₂S

Multiple Choice

Sodium reacts with chlorine to produce sodium chloride.

• NaCl(s) → Cl(g) + Na(s)
• Na(s) + CO₂(g) → NaCO₂(s)
• 2Na(s) + Cl₂(g) → 2NaCl(s)
• Na(s) + Cl(g) → NaCl

Multiple Choice

Magnesium can be burned in air to produce solid magnesium oxide.

• 2Mg(s) + O₂(g)→ 2MgO(s)
• Mg(s) + O(g) → MgO(s)
• 2Mg(s) + CO₂(g) → 2MgO(s) + C(s)
• 2Mg(s) + O₂(g) → Mg₂O₂(s)

Multiple Choice

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation