C9-L6-PRANAYA-DTQ

Which of the following is a physical change?

• Burning of paper

• Melting of ice

• Rusting of iron

• Cooking of rice

Tags

PR2

Explain_physical_and_chemical_changes_with_suitable_examples

Which of these are chemical changes?

• Burning candle

• Dissolving sugar

• Rusting of iron

• Melting wax

Tags

PR2

Explain_physical_and_chemical_changes_with_suitable_examples

Match the state of matter with its property:

• Gas

• Fixed shape

• Liquid

• Fills entire space

• Solid

• Takes container’s shape

Tags

PR1

Identify_and_differentiate_between_solids_liquids_and_gases_based_on_their_observable_properties

Arrange the steps of filtration in correct order.

• Collect residue

• Pour mixture

• Fit funnel

• Fold filter paper

Tags

PR4

Demonstrate_familiarity_with_basic_separation_techniques_such_as_filtration_evaporation_and_decantation

A substance made of only one kind of atom is called a:

• Compound

• Mixture

• Solution

• Element

Tags

PR3

Define_and_classify_materials_as_elements_compounds_and_mixtures

A __________ mixture has a uniform composition throughout.

Tags

PR7

Distinguish_between_homogeneous_and_heterogeneous_mixtures_using_everyday_examples

Salt is dissolved in water. Select the correct classification:

Salt:​ ​ ​ (a)   Water:​ ​ (b)   ​

• Solvent
• Solute
• Mixture
• Suspension

Tags

PR5

Recognize_common_solutions_solutes_and_solvents_and_describe_how_a_solute_dissolves_in_a_solvent

What is the concentration (mass by mass %) of a solution with 10g of salt in 100g of water?

• 10%

• 9.1%

• 100%

• 11.1%

Tags

PR6

Interpret_simple_concentration_measures_such_as_mass_by_mass_and_mass_by_volume_percentage

Which of the following are mixtures?

• Lemonade

• Milk

• Pure gold

• Air

Tags

PR3

Define_and_classify_materials_as_elements_compounds_and_mixtures

Do you think milk is a pure substance in chemistry?

• Yes

• No

Tags

PR3

Define_and_classify_materials_as_elements_compounds_and_mixtures