scinece Flashcards
(18 cards)
What is matter?
Anything that has mass and volume
What is energy?
The ability to do work or produce heat.
Is air a homogenous mixture or a heterogenous mixture?
Homogenous mixture.
Is a salad a homogenous mixture or a heterogenous mixture?
Heterogenous mixture.
What is a homogenous mixture?
A mixture that is evenly mixed .
What is a heterogenous mixture?
A mixture that is not evenly mixed
True or False: A pure substance is always homogenous.
True.
What is a pure substance?
A substance that is made up of only one type of particle.
Is a glass of orange juice a pure substance?
No, it is a mixture.
What is an element?
A pure substance made up of only 1 type of atom
What is a compound?
A substance made up of two or more different types of chemically bonded particles
Is melting ice a physical change or a chemical change?
Physical change.
Is burning wood a physical change or a chemical change?
Chemical change.
What is the law of conservation of energy?
Energy cannot be created nor destroyed
Is boiling water an example of a physical change or a chemical change?
Physical change.
Is rusting of iron an example of a physical change or a chemical change?
Chemical change.
Give an example of a homogenous mixture.
Saltwater.
Give an example of a heterogenous mixture.
Sand and water.
