5 Written questions
5 Matching questions
- Substance present in smaller amounts
- a When the outermost energy level of an atom is filled to capacity or contains eight electrons, the atom is stable. Such atoms are chemically unreactive. (complete)
- b Each element is composed of more or less identical (particles or building blocks)
- c Nearly all known elements have two or more structural variations, which differ in the number of neutrons they contain.
- d solutes
- e Carbohydrates that are made up of two monosaccharides
5 Multiple choice questions
- Atoms in which the outermost energy level contains fewer than eight electrons tend to gain,lose, or share electrons with other atoms to achieve stability. (incomplete)
- a negatively charged ion
- are basically flat molecules made of four interlocking hydrocarbon rings. (fat soluble and contain little oxygen)
5 True/False questions
Atomic weight → is and average of relative weights (mass numbers) of all the isotopes of an element
Radioisotopes → Nearly all known elements have two or more structural variations, which differ in the number of neutrons they contain.
The electron acceptor acquires a net negative charge called... → cation
A combination of two or more atoms held together by chemical bond is called → molecule of a compound.
the key to chemical reactivity is ... → Octet rule (or rule of eight)