Elements, Compounds & Mixtures

Froggy Jumps

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Test your understanding of basics.

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Aya Mahmoud

Egypt

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Elements, Compounds & Mixtures


Froggy Jumps Elements, Compounds & MixturesVersion en ligne Test your understanding of basics. par Aya Mahmoud 1 Which is an element? a Hydrogen b Salt c Water 2 What is a compound? a A substance formed from two or more elements joined chemically b A pure single element c A mixture of substances not chemically bonded 3 Which is a mixture? a Sodium chloride b Air c Water (H2O) 4 Iron filings arranged with sulfur to form rust-like material is: a A compound b An element c A pure mixture 5 Iron filings arranged with sulfur to form rust-like material is: a A compound b An element c A pure mixture 6 Which can be separated by physical methods? a Water (H2O) b Saltwater solution c Oxygen gas 7 Which can be separated by physical methods? a Water (H2O) b Saltwater solution c Oxygen gas 8 Which best describes an element? a A substance made of two or more elements chemically bonded b A mixture of different materials c A substance that cannot be broken down into simpler substances 9 Which example is a compound? a Water b Nitrogen gas c Oxygen gas 10 Which is NOT a property of mixtures? a Components retain properties b Elements are chemically bonded c Can be separated physically 11 What happens during the formation of a compound? a Elements react chemically and form new substances b Elements mix physically without bonds c Only physical change occurs 12 What happens during the formation of a compound? a Elements react chemically and form new substances b Elements mix physically without bonds c Only physical change occurs 13 Which process separates a solution into its components? a Evaporation b Recrystallization of a pure element c Filtration of insoluble mixture 14 Which process separates a solution into its components? a Evaporation b Recrystallization of a pure element c Filtration of insoluble mixture 15 What is an element? a A mixture of different substances b A substance formed by chemical bonds only c A substance made of one type of atom 16 What is a compound? a A mixture of elements physically combined b Any pure element c A substance with two or more elements chemically bonded 17 What is a mixture? a A single pure substance b A substance with a fixed composition c Two or more substances physically combined 18 What is a physical property? a Only measured by chemical reactions b Always changes the substance c Can be observed without changing the substance 19 Which is true about compounds? a They cannot be broken down into simpler substances b They have the same properties as the elements c Their properties differ from the elements that form them 20 What is the chemical formula for water? a H2O b CO2 c O2 21 NaCl is commonly known as? a Sugar b Vinegar c Table salt 22 Which bond involves sharing electron pairs? a Ionic bond b Metallic bond c Covalent bond 23 What is the pH of neutral water at room temperature? a 0 b 7 c 14 24 CH4 is a simple example of what class? a Organic hydrocarbon b Metallic alloy c Inorganic oxide 25 Glucose has which chemical formula? a C6H12O6 b C2H5OH c NaCl 26 NaHCO3 is commonly known as? a Ammonium chloride b Sodium bicarbonate c Sodium carbonate 27 Which gas is released when acids react with metals? a Oxygen b Nitrogen c Hydrogen 28 Which compound contributes to water hardness? a Sodium chloride b Magnesium sulfate c Calcium carbonate 29 What is the functional group in alcohols? a Amino group (-NH2) b Carboxyl group (-COOH) c Hydroxyl group (-OH)

Elements, Compounds & Mixtures

Froggy Jumps

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Elements, Compounds & MixturesVersion en ligne

par Aya Mahmoud

Which is an element?

What is a compound?

Which is a mixture?

Iron filings arranged with sulfur to form rust-like material is:

Iron filings arranged with sulfur to form rust-like material is:

Which can be separated by physical methods?

Which can be separated by physical methods?

Which best describes an element?

Which example is a compound?

Which is NOT a property of mixtures?

What happens during the formation of a compound?

What happens during the formation of a compound?

Which process separates a solution into its components?

Which process separates a solution into its components?

What is an element?

What is a compound?

What is a mixture?

What is a physical property?

Which is true about compounds?

What is the chemical formula for water?

NaCl is commonly known as?

Which bond involves sharing electron pairs?

What is the pH of neutral water at room temperature?

CH4 is a simple example of what class?

Glucose has which chemical formula?

NaHCO3 is commonly known as?

Which gas is released when acids react with metals?

Which compound contributes to water hardness?

What is the functional group in alcohols?