Properties of Materials
What are the three different properties materials can have?
physical properties, solubility, thermal conductivity
What are the three properties of matter?
volume, mass, density
Matter can change. What are the two types of changes?
There are two types of change
Physical change
Chemical changes
When two substances are mixed together they form a _______.
When two substances are mixed together they form a mixture.
What are the properties of metal?
a. hard, tough, and thermal insulator
b. hard, fragile, and a thermal conductor
c. hard, tough, and a thermal conductor
C. hard, tough, and a thermal conductor
hard or soft, tough or fragile, plastic or elastic
What is volume?
Volume is the amount of space that matter occupies
Does the composition of matter change in physical changes? Can they be reversed?
In a physical change, the composition of the matter doesn’t change. Physical changes can be reversed.
What are the two basic types of mixtures? What is the difference?
There are two basic types of mixture, a heterogenous mixture and a homogeneous mixture.
Heterogenous Mixture
We can see the separate substances
Homogenous Mixture
We cannot see the separate substances
One substance dissolves into the other
Do a kilo of potatoes and a kilo of feathers have the same mass of the same volume?
a. the same volume
b. the same mass.
c. the same mass and volume
b. the same mass
Solubility describes if a material can dissolve in water.
Materials that dissolve are ______.
Materials that don't dissolve are ______.
Materials that dissolve are soluble.
Materials that don't dissolve are insoluble.
What is mass?
Mass is the amount of matter in an object
What are the four ways matter can physically change?
shape, place, state, and temperature
A homogenous mixture where one substance dissolves in another is called a ______.
A homogenous mixture where one substance dissolves in another is called a solution.
Which are physical changes?
a. changing place and state
b. burning and rusting
c. changing temperature and burning
a. changing place and state
Thermal conductivity describes if a material can get very hot.
Materials that can get hot are ______________.
Materials that don't get hot are __________.
Materials that can get hot are thermal conductors.
Materials that don't get hot are thermal insulators.
We can use ______ to find out the mass of a stone.
We can use a ________ and _______ to find out the volume of a stone.
We can use scales to find out the mass of a stone.
We can use a measuring jug and water to find out the volume of a stone.
Does the composition of matter change in a chemical change? Can they be reversed?
In a chemical change, the composition changes and new matter is formed. Chemical changes can’t be reversed.
The substance that dissolves is called the ______ and the substance that dissolves it is called the ______
The substance that dissolves is called the solute and the substance that dissolves it is called the solvent
Which is the solute in hot chocolate?
a. milk
b. chocolate
c. milk and chocolate
b. chocolate
Give an example of a thermal conductor and a thermal insulator
metal = thermal conductor
plastic and wood = thermal insulators
What is density?
Density is the amount of mass that there is in the volume of an object.
What are the four ways matter can chemically change?
rots, rusts, burns, ferments
Three ways to separate mixtures?
filtration, evaporation, distillation
What are the three states of matter?
solid, liquid, gas