PARTICLE DIAGRAMS
PHYSICAL OR CHEMICAL
Lil Bit Everything
ENERGY/PHASE CHANGE
Mixture vs Pure Substance
100
Which of these shows a pure substance
A - compound
100
Type of change that does not alter the identity of matter
Physical change
100
The distribution of particles in a heterogeneous mixture is
uneven, unequal, not uniform throughout
100
What does the Law of Conservation of Energy/Mass tell us?
Energy/mass cannot be created or destroyed - only changed in form
100
Elements A and B combine chemically to make C
C must be a
COMPOUND
200
Which diagram represents a solid
3
200
physical or chemical properties:
See, hear, touch, smell, feel, measure
Physical properties
200
What is a synonym for homogeneous mixtures?
Solutions (bonus points if you remember how we denote/short hand that in a chemical equation)
200
If energy is given off (as heat or light)
Exothermic reaction
200
Which is an example of a compound:
Ca
NH3
Salt Water
U
NH3 - Ammonia!
300
Which diagram shows a mixture of an element and a compound
D
300
Physical or chemical change: Dissolving sugar in water
Physical - no NEW substance created
300
Separates liquids from solids in a heterogeneous mixture
Filtration
300
If energy is absorbed/taken in (most commonly as heat)
Endothermic reaction
300
Which type of matter can be broken down chemically?
Compounds
400
A - solid
400
Give two ways to identify if a chemical change has occurred
Heat, light, sound, bubbles, unexpected color change, formation of new substance, explosion
400
How do we convert from Celsius to Kelvin?
ADD 273
400
- Does NOT have a definite shape
- Does NOT have a fixed volume
- Takes the shape of its container AND fills its container
- Can be squashed
Gas
400
Smallest unit of an element or compound
An Atom
500
Does this diagram show a physical or chemical change
Chemical - new substance (compound) formed
500
Mixing vinegar and baking soda
Chemical reaction
500
If I double the temperature of a substance, how does the average kinetic energy of the particles change?
Also double - they're directly related
500
Which formula do I use when I change the temperature of a substance?
q = mcdeltaT
Bonus points if you can tell me the two other formulas and when to use them
500
Is air a mixture or a pure substance - give one reason/justification
Mixture of compounds and elements (carbon dioxide, water vapor,,,, oxygen, nitrogen, hydrogen, helium, argon)