The correct option is 4.
The ability of a compound to burn in air is a chemical property and can be used to distinguish between two compounds.
The statement that describes a chemical property which can be used to distinguish between compound A and compound B is: (4) A does not burn in air, and B does burn in air. Physical properties like color, melting point, and solubility (options 1, 2, and 3) are characteristics that can be observed without changing the substance into another substance. On the other hand, a chemical property describes how a substance interacts with other substances, including its flammability. Therefore, the ability or inability of a compound to burn in air would be a chemical property.
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A. The ocean temperatures north of Australia are lower than the ocean temperatures south of Australia
B. The ocean temperatures north of Australia are higher than the ocean temperatures south of Australia
C. The ocean temperatures north of Australia are the same as the ocean temperatures south of Australia.
D. The ocean temperatures north of Australia are sometimes higher and sometimes lower than the ocean temperatures south of Australia.
Answer:
B. The ocean temperatures north of Australia are higher than the ocean temperatures south of Australia
Explanation:
Answer:
the answer i belive is c
Explanation:
A chemical reaction occurs because heat and light are given off.
Explanation:
A property which causes change in chemical composition of a substance is known as a chemical property. For example, reactivity, toxicity, combustion etc.
Whereas a property which causes no change in chemical composition of a substance is known as a physical property. For example, mass, volume, density etc.
Sodium is a very reactive metal and it reacts readily with oxygen, water etc. So, when sodium is added to water then occurrence of an orange flame represents its reactivity.
Thus, based on given observation it can be concluded that chemical reaction takes place when sodium is added to water.