Which of the following does not indicate change may have taken place? . a - fracture formation. b - gas production . c - precipitate formation . d - energy transfer. what happens to matter during a chemical reaction? . a - matter is neither destroyed or created. b - some matter is destroyed. c - some matter is created. d - some matter is destroyed and some is create

The correct options are as follows:

1. FRACTURE FORMATION does not indicate that a change may have taken place.

In chemistry, there are two basic types of change, these are physical and chemical changes. While physical changes are reversible, chemical changes are not and they are often accompany by production of gas, production of precipitate, transfer of energy, etc. Fracture formation, which refers to separation of joints or faults during geologic formation does not indicate that any change has taken place. What occur in fracture formation is separation.

2. During chemical reaction, A MATTER IS NEITHER CREATED NOR DESTROYED.

The law, which states that 'matter is neither created nor destroyed' is called the law of conservation of mass. The law was discovered by Antoine Lavoisier in 1785. The implication of the law is that, although during chemical reactions, the quantity of matter in substances can be rearranged or changed from one state to another state, but the mass of the mater remain constant at the end of the chemical reaction.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6