Chemistry Flashcards
What is a chemical property?
A chemical property describes the ability of a substance to change into a new substance or substances. e.g. how it reacts with water, forms gas when heated, reacts with acids, emits light during reaction…
What is a physical property?
A physical property describes a characteristic of a substance that can be observed or measured. e.g. colour, density, hardness, conductivity
What is Density?
the degree of compactness of a substance
What is the Particle Theory?
The Particle Theory of matter states 1.All matter is composed of very tiny objects called particles, 2.All particles have spaces between them, 3. Particles present in matter are always in motion, 4.The particles in a substance attract eachother.
What does WHMIS stand for?
Workplace, Hazardous, Materials, Information System
How do you classify matter?
All matter is made up of different combinations of particles. It can be classified as ether a pure substance or a mixture. Mixtures are ether heterogenous or homogeneous.
What can substances be classified as?
Pure substances or mixture
Whats a Pure Substance?
A pure substance is made up of only one kind of matter and has a unique set of properties. A pure substance is ether an element or compound.
What is the difference between an element and a compound?
An element is a substance that cannot be broken down into any simpler substance by chemicals. And a compound is a pure substance that is made up from two or more elements.
What is a mixture?
A mixture is a combination of substance that are mixed together but keep its pure, original form.
What are the 3 main types of mixtures?
A mechanical mixture- easily see the different substances (soil), a suspension- a cloudy mixture (tomato juice), and a solution-not able to see the different substances because they are dissolved (tea).
What is the difference between metals and non-metals
Metals- element that is malleable and ductile and conducts electricity and heat.
Non-Metal- elements that are grouped together mainly because they do not resemble metals
What was Bohr-Rutherford’s contribution?
Bohr-Rutherford stated that all positive charges are in the centre of the nucleus. The diagram to go with that has positive charges in the centre and a large ring around it with negative on the shell. There is also a very big gap between them.
Periodic Table parts
Look in textbook
LABS!!!!!!
Physical Properties, Quantitive Observations, Density, Identifying Chemical & Physical Properties, Mixtures Activities, Comparing Metals & Non-Metals, Flame Test of Metals, Gas Test
