States of Matter
What are the three main states of matter?
Solid, liquid, and gas.
Water vapor is an example of which state of matter?
Gas
What do we call the change from a solid to a liquid?
Melting
What is physical property?
A physical property is a characteristic of matter that can be observed or measured directly.
What are some properties of matter that can be measured?
Mass, volume, and density.
What are the properties of a solid?
A solid has a definite shape and a definite volume.
How are particles in a solid compared to those in a liquid?
The particles in a solid are closer together than the particles in a liquid.
What is freezing?
The change of matter from a liquid to a solid.
What are some physical properties that can be observed?
Color, hardness, texture, odor, shape.
How do you measure mass?
A pan balance is used to measure mass.
What are the properties of a liquid?
A liquid has an indefinite shape but a definite volume.
How do gas particles move?
Very quickly in all directions.
What is evaporation?
The change of matter from a liquid to a gas.
What is mass?
Mass is the amount of matter in an object.
What are the units of measurement for volume?
Units of measurements of volume are cm3, or mL.
What are the properties of a gas?
A gas has an indefinite shape and an indefinite volume.
What happens to the shape and volume of water when poured from a glass into a bowl?
Its shape changes, but volume stays the same.
What is the name for the temperature at which a solid becomes a liquid?
The melting point.
What is volume?
Volume is how much space an object takes up.
Units of measurements of volume are cm3, or mL.
How do we measure density?
Density = Mass รท Volume, or
finding our if the object sinks or floats.
When a liquid changes to a gas, what happens to its volume and shape?
It becomes indefinite in both shape and volume.
How are particles in a liquid compared to the particles in a solid?
The particles in liquids move around more than particles in solids do.
Give an example of condensation.
An example of condensation is when you have a cold glass of water on a warm day, and you see droplets of water forming on the outside of the glass.
What is density?
Density is the amount of matter present in a certain volume of a substance. (how tightly packed the particles in an object are)
How do we measure volume?
To find the volume of a regular solid, we use this formula: V = l x w x h
To find the volume of an irregular solid, we submerge it in water and measure the water displacement, which is the difference between the initial and final water levels.