Infer Existence of Unseen Particles - 5th Grade Science
Card 1 of 20
What is an unseen particle in matter that is too small to see directly, such as an atom or molecule?
What is an unseen particle in matter that is too small to see directly, such as an atom or molecule?
Tap to reveal answer
A tiny piece of matter, such as an atom or molecule, that cannot be seen directly. These particles are too small for our eyes or regular microscopes to detect.
A tiny piece of matter, such as an atom or molecule, that cannot be seen directly. These particles are too small for our eyes or regular microscopes to detect.
← Didn't Know|Knew It →
What inference about gas particles is supported when a closed soda bottle hisses when opened?
What inference about gas particles is supported when a closed soda bottle hisses when opened?
Tap to reveal answer
Pressurized gas particles were inside and escaped when the cap was removed. Dissolved CO₂ particles escape when pressure is released.
Pressurized gas particles were inside and escaped when the cap was removed. Dissolved CO₂ particles escape when pressure is released.
← Didn't Know|Knew It →
What observation provides evidence that gases are compressible because particles have spaces between them?
What observation provides evidence that gases are compressible because particles have spaces between them?
Tap to reveal answer
Air in a syringe can be compressed into a smaller volume. Particles can move closer together when pressure is applied.
Air in a syringe can be compressed into a smaller volume. Particles can move closer together when pressure is applied.
← Didn't Know|Knew It →
What is the key evidence that a gas is present even if it is invisible?
What is the key evidence that a gas is present even if it is invisible?
Tap to reveal answer
It can exert pressure, take up space, or cause movement of objects. These observable effects prove invisible gas particles are present.
It can exert pressure, take up space, or cause movement of objects. These observable effects prove invisible gas particles are present.
← Didn't Know|Knew It →
Which conclusion is supported when a wet towel dries faster on a windy day than on a still day?
Which conclusion is supported when a wet towel dries faster on a windy day than on a still day?
Tap to reveal answer
Water particles evaporate and are carried away, allowing more to evaporate. Wind removes water vapor, maintaining the concentration gradient.
Water particles evaporate and are carried away, allowing more to evaporate. Wind removes water vapor, maintaining the concentration gradient.
← Didn't Know|Knew It →
What inference is supported when steam fogs a cold mirror and then forms liquid droplets?
What inference is supported when steam fogs a cold mirror and then forms liquid droplets?
Tap to reveal answer
Water particles in gas form condense into liquid particles on the cold surface. Temperature change causes phase transition from gas to liquid.
Water particles in gas form condense into liquid particles on the cold surface. Temperature change causes phase transition from gas to liquid.
← Didn't Know|Knew It →
Which claim is best supported by evidence from diffusion, dissolving, and compression observations?
Which claim is best supported by evidence from diffusion, dissolving, and compression observations?
Tap to reveal answer
All matter is made of tiny particles that move and have spaces between them. These phenomena all demonstrate particle behavior and properties.
All matter is made of tiny particles that move and have spaces between them. These phenomena all demonstrate particle behavior and properties.
← Didn't Know|Knew It →
Which observation best supports that matter is conserved even when particles cannot be seen?
Which observation best supports that matter is conserved even when particles cannot be seen?
Tap to reveal answer
Mass stays the same before and after a substance dissolves in a closed container. Particles rearrange but total mass remains constant.
Mass stays the same before and after a substance dissolves in a closed container. Particles rearrange but total mass remains constant.
← Didn't Know|Knew It →
What inference about salt is supported when salt seems to disappear in water but the water tastes salty?
What inference about salt is supported when salt seems to disappear in water but the water tastes salty?
Tap to reveal answer
Salt particles spread throughout the water even when not visible. Salt breaks into tiny particles distributed throughout the solution.
Salt particles spread throughout the water even when not visible. Salt breaks into tiny particles distributed throughout the solution.
← Didn't Know|Knew It →
What is the name of the process where a solid dissolves in a liquid because particles separate and mix?
What is the name of the process where a solid dissolves in a liquid because particles separate and mix?
Tap to reveal answer
Dissolving. The solid breaks into individual particles that mix with liquid particles.
Dissolving. The solid breaks into individual particles that mix with liquid particles.
← Didn't Know|Knew It →
What inference is supported when perfume spreads faster in a warm room than in a cold room?
What inference is supported when perfume spreads faster in a warm room than in a cold room?
Tap to reveal answer
Warmer temperatures make gas particles move faster, increasing diffusion. Faster-moving particles spread and mix more quickly.
Warmer temperatures make gas particles move faster, increasing diffusion. Faster-moving particles spread and mix more quickly.
← Didn't Know|Knew It →
Which statement correctly links temperature to particle motion: higher temperature means faster motion or slower motion?
Which statement correctly links temperature to particle motion: higher temperature means faster motion or slower motion?
Tap to reveal answer
Higher temperature means faster particle motion. Heat energy increases the kinetic energy of particles.
Higher temperature means faster particle motion. Heat energy increases the kinetic energy of particles.
← Didn't Know|Knew It →
Which observation best supports that air is made of particles: a sealed syringe resists being pushed or not?
Which observation best supports that air is made of particles: a sealed syringe resists being pushed or not?
Tap to reveal answer
A sealed syringe resists being pushed. The resistance shows air particles take up space and can't be compressed infinitely.
A sealed syringe resists being pushed. The resistance shows air particles take up space and can't be compressed infinitely.
← Didn't Know|Knew It →
What conclusion about particles is supported when a balloon expands as air is blown into it?
What conclusion about particles is supported when a balloon expands as air is blown into it?
Tap to reveal answer
Air is matter made of particles that take up space. The balloon stretches because air particles need room inside.
Air is matter made of particles that take up space. The balloon stretches because air particles need room inside.
← Didn't Know|Knew It →
Which property of gases explains why a smell spreads across a room without being carried by wind?
Which property of gases explains why a smell spreads across a room without being carried by wind?
Tap to reveal answer
Diffusion of gas particles. Gas particles move randomly and spread from high to low concentration.
Diffusion of gas particles. Gas particles move randomly and spread from high to low concentration.
← Didn't Know|Knew It →
What inference is supported when food coloring spreads through still water over time?
What inference is supported when food coloring spreads through still water over time?
Tap to reveal answer
Water and dye are made of moving particles that mix by diffusion. Particles naturally spread from high to low concentration without stirring.
Water and dye are made of moving particles that mix by diffusion. Particles naturally spread from high to low concentration without stirring.
← Didn't Know|Knew It →
Which inference is supported when pollen grains jitter under a microscope in still water?
Which inference is supported when pollen grains jitter under a microscope in still water?
Tap to reveal answer
Invisible water molecules are moving and colliding with the pollen. The jittering proves water contains moving particles we can't see.
Invisible water molecules are moving and colliding with the pollen. The jittering proves water contains moving particles we can't see.
← Didn't Know|Knew It →
What inference about air particles is supported when a vacuum-sealed bag shrinks as air is removed?
What inference about air particles is supported when a vacuum-sealed bag shrinks as air is removed?
Tap to reveal answer
Air particles take up space and can be removed from a container. Removing particles creates empty space, causing the bag to collapse.
Air particles take up space and can be removed from a container. Removing particles creates empty space, causing the bag to collapse.
← Didn't Know|Knew It →
What observation supports that gases are matter even though they are invisible?
What observation supports that gases are matter even though they are invisible?
Tap to reveal answer
A filled ball has more mass than an empty ball. Gas particles have mass even though we can't see them.
A filled ball has more mass than an empty ball. Gas particles have mass even though we can't see them.
← Didn't Know|Knew It →
Identify the best inference: You smell perfume across a room. What does this suggest about air?
Identify the best inference: You smell perfume across a room. What does this suggest about air?
Tap to reveal answer
Air contains moving particles that spread the perfume molecules. Perfume molecules mix with air particles that carry them throughout the room.
Air contains moving particles that spread the perfume molecules. Perfume molecules mix with air particles that carry them throughout the room.
← Didn't Know|Knew It →