Density
Density is defined as ________ per unit of volume.
Mass
A pure substance that can't be separated into simpler substances by physical or chemical means
Element
An ice cube melts on a sunny day, this is an example of a _______________ change.
Physical
Particles that cling together and slide past one another are in a solid, liquid, or gas?
Liquid
The point at which water turns from a liquid to a gas is the ___________ _________.
boiling point
Volume is _______x __________x________
length x width x height
a pure substance composed of 2 or more elements that are chemically combined.
Compound
A juicy rib eye steak is cut down the middle to see if it's cooked to the diner's liking. Is this a physical or chemical change?
Physical
Thermal energy is removed from the particles in a substance: will this speed up or slow down the particles within that substance?
Slow them down
Angela places potato peels in her compost bin. When she returns 2 weeks later the potato peels are unrecognizable among the rest of the compost. This decomposition is what type of property, Physical or Chemical?
Chemical Property
Mass is equal to
M= ________ x _________
M= Density x Volume
A characteristic that can only be observed by changing it into a different substance.
A Chemical Property
Boiling an egg is an example of a ___________ change.
Chemical
Gas particles bounce around off of one another and fill the room or container that they are in. This is an example of __________ kinetic energy.
high
When water changes phase from a liquid to a gas, this is known as ___________.
Evaporation
What is the mass of a liquid whose density is 3 g/mL with a volume of 9 mL?
27 g
A physical Property that depends on the amount of a substance that you have.
An Extensive Physical Property
An old Chevy sits by the bay, it has been neglected for so long that the color has faded and there are patches of rust. Is this a Physical or Chemical Change?
Chemical
A solid has particles that are close together, vibrate. The particles of a solid have ___________ kinetic energy.
Low
A physical property that does not depend on the amount of a substance that you have; such as density, melting point, and boiling point is known as an ____________ physical property.
Intensive
What is the Density of a solid whose mass is 10g and volume is 5 cm3?
2 g/cm3
A change in a substance that does not change what the substance is.
A Physical Change
We are in the lab and we mix 2 unknown liquids. After we mix them a solid begins to form. Is this a physical or chemical change?
Chemical
When we heat up a substance we are giving it more __________ __________.
Thermal Energy
During a chemical change energy can be released in the form of _______ or ________.
heat or light