CBSE Class 8 Science Project Set 02

PHYSICS: By taking the examples from our daily activity make a project file on Force and Pressure. In the project file, illustrate the activity showing:

1. Air has weight

2. Air exerts pressure.

3. Air offers resistance

BIOLOGY: Prepare a project file containing important cell organelles like:-

Mitochondria.

Golgi apparatus.

Plastids.(chloroplast)

Endoplasmic reticulum.

Vacuole.

a) Write note over their structure, location, function.

b) Paste colorful pictures, draw diagrams.

CHEMISTRY:

Balancing the chemical equations

1) ____ Na₃PO₄ + ____ KOH → ____ NaOH + ____ K₃PO₄

2) ____ MgF₂ + ____ Li₂CO₃ → ____ MgCO₃ + ____ LiF

3) ____ P₄ + ____ O₂ → ____ P₂O₃

4) ____ RbNO₃ + ____ BeF₂ → ____ Be(NO₃)₂ + ____ RbF

5) ____ AgNO₃ + ____ Cu → ____ Cu(NO₃)₂ + ____ Ag

6) ____ CF₄ + ____ Br₂ → ____ CBr₄ + ____ F₂

7) ____ HCN + ____ CuSO₄  → ____ H₂SO₄ + ____ Cu(CN)₂
8) ____ GaF₃ + ____ Cs → ____ CsF + ____ Ga
9) ____ BaS + ____ PtF₂ → ____ BaF₂ + ____ PtS
10) ____ N₂ + ____ H₂ → ____ NH₃
11) ____ NaF + ____ Br₂ → ____ NaBr + ____ F₂
12) ____ Pb(OH)₂ + ____ HCl → ____ H₂O + ____ PbCl₂
13) ____ AlBr₃ + ____ K₂SO₄ → ____ KBr + ____ Al₂(SO₄)₃
14) ____ CH4 + ____ O₂ → ____ CO₂ + ____ H2O
15) ____ Na₃PO₄ + ____ CaCl₂ → ____ NaCl + ____ Ca₃(PO₄)₂
16) ____ K + ____ Cl₂ → ____ KCl
17) ____ Al + ____ HCl → ____ H₂ + ____ AlCl₃
18) ____ N₂ + ____ F₂ → ____ NF₃
19) ____ SO₂ + ____ Li₂Se → ____ SSe₂ + ____ Li₂O
20) ____ NH₃ + ____ H₂SO₄ → ____ (NH₄)₂SO₄