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Compacted ­ Squashed together

Fossils ­ The remains or traces of living organisms

Erode ­ Wear away

Decomposes ­ Breaks down

Condensed ­ When you change from gas to liquid to lose heat and change from a vapour
into a liquid, or make a vapour change to a…

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Metal carbonates ­ A compound containing a metal, carbon and oxygen. Example
Limestone has calcium, carbon and oxygen

Hydrochloric acid- A strongly acidic solution of the gas hydrogen chloride, HCl, in water

Digestion ­ Digestion is the process of breaking down food so that it's small enough to…

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Cation- A positively charged ion

Crystal lattice ­ repeating pattern found in the arrangement of ionic compounds

Simplest whole number ratio of atoms that matches the relative ratio
Empirical Formula-
found in a chemical compound
Endothermic Absorption of energy from surroundings
Exothermic Release of energy to surroundings
Simplest…

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Solvent- Substance in which another substance dissolves

Tetra- Four

Tri- Three

Variable - Something which can be changed during an experiment

Devise - Plan

Di- Two

Distinguish - Tell the difference

Elaborate- Go into more detail

Estimate- Make a rough guess based on the information given

Group -…

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Ethanol - An important alcohol compound which can be produced industrially by the
hydration of ethane with steam in the presence of a catalyst; And naturally by fermentation.
It is used as a fuel and a solvents, it is also the main alcohol in alcoholic drinks. Its chemical…

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Tectonic plate - Is a massive, irregularly shaped slab of solid rock, generally composed of both
continental and oceanic lithosphere.

Tectonics- Describes the movement of the earth's plates, and is caused by convection
currents within the earth's mantle.


Transition - A block of elements between groups 2 and…

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Non-metal - Elements which are poor conductors of heat and electricity, have low melting
and boiling points. If solid, then brittle.

Nucleus- Structure at the center of atoms contains protons and neutrons.

Optimum - Describes the temperature at which enzymes work best usually 38 - 40 °C.

Ores-…

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