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60 Cards in this Set

  • Front
  • Back
A _____ is a combination of elements.
compound
A change in temperature means a change in _____.
energy
A solution is a compound. T/F?
False
Baking a cake is a physical change. T/F?
False
Boiling occurs when a _____ changes to a _____ at boiling point.
liquid, gas
Carbon dioxide is a compound. T/F?
True
Changing a liquid to a solid is called _____ or _____.
freezing, solidification
Changing a solid to a liquid is called _____.
melting
Chemical changes cannot usually be _____.
reversed
Chemical changes produce _____ substances with _____ chemical properties.
new, new / different
Concrete is an example of a _____.
mixture
Elements are _____ substances.
pure
Elements are pure substances made up of only _____ kind of atom.
one
Evaporation occurs when a _____ changes to a _____.
liquid, gas
Gases have no fixed volume. T/F?
True
How many atoms of nitrogen does dinitrogen tetroxide have?
two
How many atoms of oxygen does carbon monoxide have?
one
How many atoms of oxygen does dinitrogen tetroxide have?
four
In _____ the particles can only vibrate.
solids
In compounds, the elements are in _____ proportions.
fixed
In mixtures, substances can be mixed in different _____.
proportions
Is air an element, compound or mixture?
mixture
Lipstick is a compound. T/F?
False
Liquids can be compressed. T/F?
False
Melting an ice cube with a Bunsen is a chemical change. T/F?
False
Mixtures are several different _____ mixed together.
substances
Mixtures can be separated by simple means. T/F?
True
Name a metal which is a liquid at room temperature.
mercury
Name three magnetic metals.
iron, nickel, cobalt
Permanent colour change is evidence of a _____ change.
chemical
Physical changes cannot be reversed. T/F?
False
Reacting iron and sulfur together is a _____ change.
chemical
Rusting a nail is a chemical change. T/F?
True
Sharpening a pencil is a physical change. T/F?
True
Silver and Gold are both _____.
elements / pure substances / metals
Solidification occurs when a _____ changes to a _____.
liquid, solid
The elements that make up hydrogen sulphide are _____ and _____.
hydrogen, sulfur
The elements that make up phosphorus pentachloride are _____ and _____.
phosphorus, chlorine
The prefix “di-” means _____.
two
The prefix “hexa-” means _____.
six
The prefix “mono-” means _____.
one
The prefix “penta-” means _____.
five
The prefix “tetra-” means _____.
four
The prefix “tri-” means _____.
three
To melt a solid, _____ must be added.
heat
Uranium is a _____ element.
radioactive
What are the three states of matter?
solid, liquid, gas
When a gas condenses it turns into a _____.
liquid
Who is your favourite Year 9 Science teacher?
Mr Dennis!
In liquids, the particles can _____ past each other.
flow
In gases, the particles move in _____ lines at high _____.
straight, speed
Solids cannot be compressed. T/F?
True
Gases can be compressed. T/F?
True
Grinding a substance into powder is a _____ change.
physical
Name the two elements that make up water.
hydrogen and oxygen
Burning is a _____ reaction.
chemical
Bubbles of _____ may indicate a _____ change.
gas, chemical
Taste and odour are examples of _____.
properties
Atoms and molecules can be thought of as tiny _____.
particles
Name a non-metal which is a solid at room temperature.
iodine