Matter
What is Matter?
Anything that has mass and has volume.
What are the two types of pure substances?
Elements and Compounds
Is colour a quantitative or qualitative property?
Qualitative
Is a change of state a physical or chemical change?
Physical
What is the formula for density?
D = M/V
Boiling/Evaporation
If I made Kool-Aid by mixing the powder into water, what type of mixture would I be making?
Homogenous solution
Name two quantitative properties.
Temperature, mass, density, volume, length, etc...
Name a chemical change that happens when cookies are baking.
Bubbles, turns brown, emits yummy smell.
What units do we use for density (for both solids and liquids)
g/cm3 or g/mL
What happens to particles when heat is added?
They move faster, may spread apart and change states.
What is it called when the different substances that make up the mixture are visible?
Heterogeneous mixture
What is lustre?
How shiny or dull something is. How well it reflects light.
If a substance forms gas when heated, is this a physical or chemical characteristic?
Chemical
If I put honey (density is 1.4g/mL), water (density 1.0g/mL) and mineral oil (density 0.8g/mL) together in a cup, in what order would the liquids settle?
Honey on bottom, water in middle, mineral oil on top
Name one aspect of The Particle Theory of Matter.
All matter is composed of very tiny objects called particles that have empty spaces between them. Different substances are made up of different types of particles. Particles present in matter are always in motion (move faster when heated). The particles in a substance attract each other.
Name the difference between pure substances and mixtures.
Pure substances are made up of only one type of matter.
Name an element that is malleable.
Aluminium, tin, copper, gold, etc.
What is the main difference between chemical and physical changes?
Physical changes do not create new substances and can be reversed. Chemical changes DO result in the formation of a new substance.
Calculate the density of a substance that has a mass of 4.5g and a volume of 13.5mL.
D = 4.5g/13.5mL = 0.33g/mL
Name two points at which matter changes state.
Melting point, boiling point, condensing point, freezing point.
Name a compound and explain why it is a compound.
Two or more elements chemically combined.
Describe what conductivity is and name one conductor.
The ability of a substance to conduct electricity or heat. Most metals...copper, silver, gold, etc.
Name four types of evidence that a chemical change occurred.
Change in colour, odour, temperature. Production of gas (bubbles), precipitate (solid), light.
Given the density of aluminum is 2.70 g/cm3, what volume would 200g have?
V = M/D = 200g/ 2.70g/cm3 =74.07mL