Lab Procedures
What are 3 major risks in a lab?
Cuts, Burns, Fire, Falls, Trips, Chemicals
What causes matter to change states?
Energy
What is an element?
An element is pure substance composed of a single type of atom
At a particle level, are all physical changes reversible?
Yes
What colour are sunsets on Mars?
Blue
What makes a substance flammable?
It ignites easily
What happens to matter at its melting point?
It changes from a solid to a liquid
Using your Student Handbooks, how many protons does gold have?
79
What is the difference between a chemical and physical change?
A physical change changes the appearance of matter, whereas a chemical change changes the kind of matter (creates a new substance)
A beefalo is a hybrid between what 2 animals?
Cow and buffalo
How long do you run your hand under cold water if you burn it?
10 minutes
What are three out of the four main ideas of the Particle Theory?
1. All matter is made up of tiny particles.
2. The particles of matter are always moving.
3. The particles have spaces between them.
4. Adding heat to matter makes the particles move faster.
What element is in group 14, period 6?
Lead
What does the Law of Conservation of Mass tell us?
Matter can neither be created or destroyed
What animal did Domino's Japan train to deliver pizza?
Reindeer
What are two things a Risk Assessment tells you?
Tells the reader about the risks in an experiment as well as how to work safely, how to dispose of waste products and how to deal with an accident.
As a solid's temperature increases, what happens to its particles?
The particles begin to vibrate more and push apart
How many neutrons are in Hydrogen?
None
A petri dish of ethanol is left out overnight and evaporates. Is this a chemical or physical change?
Physical
What country has the most tornados every year (per square kilometre)?
What is a MSDS used for?
To determine the risks involved when using chemicals
What are 5 changes of state?
Melting, Sublimation, Freezing, Evaporating, Condensing
What is the difference between a compound and a mixture?
Compounds are two or more elements that are chemically bound whereas mixtures are two or more substances that are NOT chemically bound
What are 3 ways we can tell that a chemical change has occured?
A precipitate forms, a colour change occurs, One of the initial substances may be used up, a new product is formed, a gas is produced, heat and/or light is absorbed or produced.
Koumpounophobia is a fear of what? (Something to do with clothing)
Buttons