Chemistry Gr.10 T1 Flashcards
What is a variable?
Any factor or condition that can exist in different amounts or types.
What are 6 properties that materials can have?
- Strength
- Thermal and electrical conductivity
- Brittleness, malleability, ductility
- Magnetic/ non-magnetic
- Density
- Melting and boiling point
What 2 types of matter do you get?
Mixtures
Pure substance
What 2 types of mixtures are there?
Homogeneous mixtures
Heterogeneous mixtures
What 2 types of pure substances are there?
Elements
Compounds
What would water be an example of?
A compound
What would wine be an example of?
A homogeneous mixture
What would iron be an example of?
An element
What would cream soda be an example of?
A heterogeneous mixture. (Because of the bubbles)
What 2 types of heterogeneous mixtures are there?
Suspensions and emulsions
What is the difference between emulsions and suspensions?
Suspension: solid in a liquid
Emulsion: liquid in a liquid
How does one separate salt from water?
Evaporation
How do you separate iron from sulphur?
Magnetism
How does one separate coloured ink?
Chromatography
What is a compound?
Different atoms bonded in fixed ratios.
What is an element?
Only one type of atom.
What is a physical change?
When parts of the mixture that are separated still keep their properties.
Name the formula and common name of calcium carbonate.
CaCO
3
Marble, limestone, chalk
Name the formula and common name of sodium nitrate
NaNO
3
Chile saltpetre
Name the formula of zinc sulphate.
ZnSO
4
No common name
Name the formula and common name of sodium chloride
NaCl
Table salt
Name the formula of copper (||) chloride.
CuCl
2
No common name
What is the formula for chalk?
CaCO
3
What is the formula for chile saltpetre
NaNO
3
What is the formula for table salt?
NaCl
Name the formula of calcium chloride.
CaCl
2
No common name
Name the formula of sodium bromide
NaBr
No common name
Name the formula of sodium oxide.
Na O
2
No common name
Name the formula and common name of hydrogen chloride.
HCl
Hydrochloric acid
Name the formula and common name of hydrogen nitrate
HNO
3
Nitric acid
Name the formula and common name of dihydrogen sulphate
H SO
2 4
Sulfuric acid
Name the formula and common name of calcium oxide
CaO
Quicklime
Name the formula of copper (||) oxide
CuO
No common name
Name the formula of sodium oxide.
Na O
2
No common name
Name the formula and common name of calcium hydroxide
Ca(OH)
2
Slaked lime
Name the formula and common name of sodium hydroxide
NaOH
Caustic soda
What is the formula for caustic soda?
NaOH
What is the formula for slaked lime?
Ca(OH)
2
What is the formula for quicklime?
CaO
What is the formula for sulfuric acid?
H SO
2. 4
What is the formula for nitric acid?
HNO
3
What is the formula for hydrochloric acid?
HCl
What is the difference between a symbol and a formula?
Elements have symbols.
Compounds have formulas with the amount of each element in the compound.
What are the 3 types of ions?
Metal ions
Non-metal ions
Polyatomic ions
What are the 3 types of molecules in terms of conductivity?
Metals
Non-metals
Metalloids
What are the 3 ferromagnetic elements?
Iron
Cobalt
Nickel
What is Brownian motion?
The jerky, random motion of particles because of collisions.
What is diffusion?
The movement of a fluid from a high concentration to a low concentration.
What 2 things does the state of a substance depend on?
Kinetic energy of its particles
Intermolecular forces between its particles
What does kinetic energy in a particle do?
It determines how much particles move.
What does intermolecular force do?
It holds particles together.
What is temperature?
A measure of a particle’s average kinetic energy.
What are the 4 steps of the kinetic molecular theory?
- Particles gain kinetic energy.
- Particles move faster
- Particles have enough energy to break intermolecular forces
- Particles move further apart (phase change)
What do you call it when a solid becomes a gas?
Sublimation
What is a melting point?
The temperature at which a solid becomes a liquid.
What is the Kinetic Molecular Theory?
A theory that explains observed changes of state in terms of position and speed of the particles.