Matter
All living things are made up of this.
When a solid becomes a liquid.
Properties that can be observed without forming a new substance.
What is physical properties?
A measure of how much mass is packed into a given space (volume).
What is density?
Pure substances made of 2 or more different elements.
Matter can exist in these three main states.
What are solid, liquid, and gas.
An explanation of why matter behaves the way it does.
Particle theory
List examples of physical properties.
- colour
- texture
- smell
- state
- melting point
- boiling point
- hardness
- density
Calculation of density.
M = D x V
V = M / D
One or two letters to represent an element in the periodic table.
What is atomic symbol?
Why do you think it's important to classify matte
It helps us understand how substances behave, predict reactions, and apply them in technology or medicine.
As temperature increases, this happens to the motion of particles.
What is the particles move faster?
What is the difference between a solute and a solvent?
A solute is the substance that is dissolves in the solution. A solvent is the substance that is doing the dissolving.
A block of cement has a mass of 50 kg and a volume of 0.048 m3. What is its density?
The density of the block is 1,000 kg/m3.
Metals that are extremely reactive and can easily combine with other elements or compounds.
How can you distinguish between a pure substance and a mixture using only physical methods?
By observing properties like boiling point or using separation techniques. A pure substance has consistent properties; a mixture can be separated into components.
According to particle theory, this is why solids keep their shape.
What is particles in solids are tightly packed and vibrate in place?
When no more of something can be absorbed, combined with, or added.
What is saturation?
A rubber ball has a mass of 40 g and a density of 1.3 g/cm3. What is the volume of the ball?
The volume of the ball is 30 cm3.
On the periodic table, find Oxygen. Figure out the numbers for each atom.
Protons: 8
Neutrons: 8
Electrons: 8
How can the properties of a substance help you determine whether it's a physical or chemical change during an experiment?
Physical changes affect appearance, while chemical changes involve new substances and changes in properties like color, temperature, or gas production.
How does the particle theory explain why a solid expands when heated?
What is particles vibrate more and push each other slightly farther apart as they gain energy?
The universal solvent.
Water
A block of wood has dimensions 25 cm x 15 cm x 50 cm and a density of 0.4 g/cm3. What is the mass of the wood?
The mass of the wood is 8,000 g.
On the periodic table, find Aluminum. Figure out the numbers for each atom.
Protons: 13
Nuetrons: 14
Electrons: 13