10th Sep '25

Multiple Choice 2015-16

Question	Answer	Mislead1	Mislead2	Mislead3	Point	Flag
What are the properties of solids?	Solids hold their shape.	Solids fill their containers.	Solids take the shape of the bottom of their container.	Solids shape of the shape of top of their container.	Solids hold their shape.	1
What are the properties of liquids?	Liquids take the shape of the bottom of their container.	Liquids hold their shape.	Liquids fill their containers.	Liquids shape of the top of their container.	Liquids take the shape of the bottom of their containers.	0
What are the properties of gases?	Gases fill their containers.	Gases take the shape of the bottom of their container.	Gases hold their shape.	Gases take the shape of the top of their container.	Gases fill their containers.	1
What is a fluid?	Fluids are liquids and gases because they can flow.	Fluids are solid and gases because they can float.	Fluids are liquids and solid because they can flow.	Fluids are liquids and gases because they can float.	Liquids and gases are known as fluids because they can flow.	0
What is anything with mass made of?	All matter (stuff) is made of particles.				All matter (stuff) is made of particles.	0
How are the particles arranged in solids?	Particles in a solid form a lattice - regular pattern.	Particles in a solid are spread out and have no pattern.	Particles in a solid are touching, but have no pattern.	Particles in a solid are split.	Particles in a solid form a lattice - regular pattern.	1
How are the particles arranged in liquids?	Particles in a liquid are touching, but have no pattern.	Particles in a liquid form a lattice - regular pattern.	Particles in a liquid are spread out and have no pattern.	Particles in a liquid are split.	Particles in a liquid are touching, but have no pattern.	0
How are the particles arranged in gases?	Particles in a gas are spread out and have no pattern.	Particles in a gas are touching, but have no pattern.	Particles in a gas form a lattice - regular pattern.	Particles in a gas are split.	Particles in a gas are spread out, with no pattern.	1
What property do substances which have particles that are able to move relative to each other have?	They are able to flow (occurs in both liquids and gases).				When particles can move relative to each other, the material can flow.	0
What is density?	Density is the how heavy a material is for a given size/the ratio of mass to volume.				Lower: Density is the how heavy a material is for a given size. Higher: Density is the ratio of mass to volume.	0
How can we use the a eureka can to measure the volume of an object?	Fill the eureka can with water and then place the object of interest into it. Measure the volume of water that is displaced.				Measure the mass and volume of material sample blocks / objects using eureka cans. Calculate density. Conversion of units and the use of unit prefixes.	0
How does the density change between solid, liquid and gas?	- Solids are the most dense; - Gases are the least dense; - With liquids between.	- Gases are the most dense; - Solids are the least dense; - With liquids between.	- Solids are the most dense; - Liquids are the least dense; - With gases between.	- Gases are the most dense; - Liquids are the least dense; - With solids between.	For the same material: - Solids are the most dense; - Gases are the least dense; - With liquids between.	1
What happens when a solid is heated but does not yet melt?	Matter expands when heated so becomes less dense.	Matter contracts when heated so becomes less dense.	Matter contracts when heated so becomes more dense.	Matter expands when heated so becomes more dense.	So what happens when a solid is heated but does not yet melt: Matter expands when heated Matter becomes less dense when heated.	1
What happens to particles when they are heated?	Particles move faster when heated, and so occupy a larger space.	Particles move faster when heated, and so occupy a smaller space.	Particles move slower when heated, and so occupy a larger space.	Particles move slower when heated, and so occupy a smaller space.	Particles move faster when heated, and so occupy a larger space. Particles do not change size, but can be of different sizes.	1
What happens to the force of collision of particles when heated?	When heated, the forces involved in collisions increases as the particles are moving faster.	When heated, the forces involved in collisions decreases as the particles are moving faster.	When heated, the forces involved in collisions increases as the particles are moving slower.	When heated, the forces involved in collisions decreases as the particles are moving slower.	When heated, the forces involved in collisions increases as the particles are moving faster.	1
At what temperature would particles ever be stationary?	Particles are never stationary - other than at absolute zero There is nothing in the gaps between particles.				Particles are never stationary - other than at absolute zero There is nothing in the gaps between particles.	0
What common chemical is an anomaly and actually less dense as a solid?	The anomaly of ice-water transition: This is why ice floats on water and a full bottle of water breaks in a freezer. It expands and becomes less dense when freezing to a solid.				DESIRABLE: The anomaly of ice-water transition: Less dense objects float. If solids are more dense than liquids, why does ice float on water? Why does a full bottle of water break when left in a freezer? Ice is less dense than water.	0
What are the processes of a solid turning into a liquid and a liquid turning into a gas called? What are the processes called changing from a gas to a liquid?	The process of a solid turning into a liquid is called melting. The process of a liquid turning into a solid is called freezing. The process of a liquid turning into a gas is called evaporation. The process of a gas turning into a liquid is called condensation.				The process of a solid turning into a liquid is called melting. The process of a liquid turning into a solid is called freezing. The process of a liquid turning into a gas is called evaporation. The process of a gas turning into a liquid is called condensation.	0
What is the process of a solid turning into a gas called?	The process of a solid turning into a gas is called sublimation.	The process of a solid turning into a gas is called evaporation.	The process of a solid turning into a gas is called condensation.	The process of a solid turning into a gas is called deposition.	The process of a solid turning into a gas is called sublimation. These are all changes of state, as solid, liquid and gas are known as 'states of matter'.	1
Do uncharged particles attract or repel each other?	Particles always attract each other.				Particles always attract each other.	0
How do the forces of attraction and collision determine the state of matter?	Solids exist when the attraction between particles is greater than the forces involved in collisions. Gases exist when the attraction between particles is less than the forces involved in collisions.				Solids exist when the attraction between particles is greater than the forces involved in collisions. Gases exist when the attraction between particles is less than the forces involved in collisions.	0
Why are liquids able to pour and take the shape of their containers?	Liquids can pour and take the shape of their container because particles are able to change places with each other. This is what causes the lack of a pattern.				Liquids can pour and take the shape of their container because particles are able to change places with each other. This is what causes the lack of a pattern.	0
What effect does energy have on the forces of attraction during melting?	Liquids exists when some particles temporarily get enough energy to over come the forces of attraction with its neighbour and so change places with each other.				Liquids exist when some particles temporarily get enough energy to over come the forces of attraction with its neighbour and so change places with each other.	0
How does the mass of water change as an ice cube melts?	The mass of water stays the same as an ice cube melts.	The mass of water increases as an ice cube melts.	The mass of water decreases as an ice cube melts.	The change in mass of water is random as an ice cube melts.	Make a prediction of the change in mass when an Ice cube melts. Develop into an explained hypothesis.	1
What does the term 'conservation of mass' mean?	Particles can not be created or destroyed.				Particles can not be created or destroyed.	0
Why does the mass change during evaporation?	Although there are no particles destroyed during evaporation, once a gas the particle can not be measured by the balance.				There is a conservation of material and of mass for physical processes ie: in melting, freezing, evaporation, sublimation, condensation. NB: Students have not studied chemical reactions yet.	0
How can we represent the changes of state in diagram form?	Check for number of particles being constant; Label melting, freezing, evaporation, sublimation, condensation.				Draw a labelled diagram to show the particle arrangement for a material sample as a solid, liquid and gas. Like: http://www.chemistry.wustl.edu/~edudev/LabTutorials/Thermochem/images/SolLiqGas.jpg Check for number of particles being constant. Label melting, freezing, evaporation, sublimation, condensation.	0
What is internal energy?	The energy of the particles in a material is called 'internal energy'.				The energy of the particles in a material is called 'internal energy'.	0
What type of energy do particles gain when they are heated?	Particles gain kinetic (movement) energy when they are heated.				When particles are given heat energy they move faster, this because they gain kinetic (movement) energy.	0
How does the internal energy of a material change as state changes?	A change of state from solid to liquid, liquid to gas or solid to gas requires an increase of the internal energy of the material.				A change of state from solid to liquid, liquid to gas or solid to gas requires an increase of the internal energy of the material.	0
Why does the temperature of water not increase during melting and evaporation?	An increase of the internal energy of the material does not always result in a increase in temperature. Some energy is used in order to change state.				An increase of the internal energy of the material does not always result in a increase in temperature. Some energy is used in order to change state.	0

Mod	Number of Questions
0S	10
1B	10
1C	10
1P	10
BI	5