Gas Laws & Atom Theory Quiz

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Gas laws and atomic theory basics

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zubia nadeem

United States

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Gas Laws & Atom Theory Quiz


Gas Laws & Atom Theory QuizVersion en ligne Gas laws and atomic theory basics par zubia nadeem 1 Which statement best describes the law of conservation of mass? a Only reactants’ mass equals products’ mass b Total mass of reactants equals total mass of products c Mass converts to energy during reactions d Mass changes form but not amount in a closed system 2 What does the law of constant composition state about a pure compound? a Its elements combine in fixed whole-number proportions by mass b Its mass can vary with temperature c Its atoms can rearrange into any ratio d It contains a variable ratio of elements depending on preparation 3 Which scenario illustrates the law of multiple proportions? a Two compounds have the same elemental masses in unequal ratios b A compound’s mass changes with pressure c Two compounds of hydrogen and oxygen have whole-number mass ratios of oxygen to hydrogen d Different elements combine to form one compound 4 Avogadro’s law relates which two concepts? a Gas pressure is independent of volume b Equal volumes of gases at the same T and P contain equal numbers of molecules c Gases have equal densities at equal volumes d Mass of gas is proportional to volume 5 According to Gay-Lussac’s law, what happens to pressure when temperature doubles at constant volume? a Pressure doubles b Pressure stays the same c Pressure quadruples d Pressure halves 6 Which statement is NOT part of Dalton’s atomic theory? a Atoms are rearranged in chemical reactions to form new substances b Atoms of different elements have different masses c Atoms can be subdivided into smaller particles during reactions d Atoms combine in simple whole-number ratios 7 In a reaction, if 12 g of A and 8 g of B form products with total mass 20 g, what does this illustrate? a Avogadro’s law b Law of multiple proportions c Conservation of mass d Law of definite proportions 8 Which pair correctly reflects the law of constant composition? a A pure element contains two elements in variable ratios b A compound’s mass changes with how it’s prepared c A compound W can have 50% W and 50% X by mass d A compound W contains 40% W and 60% X by mass in every sample 9 If 22.4 L of a gas at STP contains 6.02×10^23 molecules, what is the number of molecules in the same volume of another gas at the same conditions? a 6.02×10^23 molecules b 12.04×10^23 molecules c 3.01×10^23 molecules d 1.20×10^24 molecules 10 Using Avogadro’s and ideal gas concepts, 2 moles of gas occupy how many liters at STP? a 22.4 L b 44.8 L c 67.2 L d 11.2 L Feedback 1 Mass cannot be created or destroyed in a chemical reaction; it is conserved in closed systems. 2 Pure compounds have fixed elemental ratios by mass, regardless of sample size. 3 When elements form more than one compound, the masses of one element combine with a fixed mass of the other in simple whole-number ratios. 4 At the same temperature and pressure, equal volumes have the same number of molecules, regardless of the gas. 5 Pressure is directly proportional to temperature when volume is fixed. 6 Dalton’s model treated atoms as indivisible; later discoveries showed subatomic particles exist. 7 Total mass of reactants equals total mass of products in a closed system. 8 In any pure compound, the mass ratio of constituent elements is fixed. 9 At STP and same volume, equal numbers of molecules are present for any gas. 10 One mole at STP occupies 22.4 L; two moles occupy 44.8 L.

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Gas Laws & Atom Theory Quiz

Test

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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Gas Laws & Atom Theory QuizVersion en ligne

par zubia nadeem

Which statement best describes the law of conservation of mass?

What does the law of constant composition state about a pure compound?

Which scenario illustrates the law of multiple proportions?

Avogadro’s law relates which two concepts?

According to Gay-Lussac’s law, what happens to pressure when temperature doubles at constant volume?

Which statement is NOT part of Dalton’s atomic theory?

In a reaction, if 12 g of A and 8 g of B form products with total mass 20 g, what does this illustrate?

Which pair correctly reflects the law of constant composition?

If 22.4 L of a gas at STP contains 6.02×10^23 molecules, what is the number of molecules in the same volume of another gas at the same conditions?

Using Avogadro’s and ideal gas concepts, 2 moles of gas occupy how many liters at STP?

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