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A bond formed between a metal atom and a non-metal atom in which electrons are transferred from the metal atom to the non-metal atom, forming ions. If an atom loses an electron, it becomes positively char...

Positive. The neutrons found in the nucleus have a neutral charge, however the protons are positively charged. Therefore the overall charge is positive.

• chloroplasts which are able to trap light so it can be used to generate energy through photosynthesis - cell wall which provides the plant cell with structure

The cell has an outer membrane known as the cell membrane, which envelops the cytoplasm. The cell also contains mitochondria which work to provide the cell with energy (in the form of ATP) and a nucleus, ...

When starting learning Portuguese, some may wonder whether they need to opt for European (Portuguese as spoken in Portugal) or Brazilian Portuguese. The differences lie mainly in pronunciation, although t...