GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
oxygen has a melting point of 55 Kelvin
|
|
|
oxygen can combine with a metal to produce a compound
|
|
|
oxygen gas is slightly soluble in water
|
|
|
oxygen gas can be compressed
|
Detailed explanation-1: -Answer. (2) Oxygen can combine with a metal to produce a compound is the correct answer, for when Oxygen combines with a metal, a new substance is formed. The other three are just physical properties of Oxygen.
Detailed explanation-2: -Which of the following describes a chemical property of oxygen? Oxygen is a gas at room temperature.
Detailed explanation-3: -Metals, on being burnt in air, react with the oxygen to form metal oxides.
Detailed explanation-4: -A chemical property of iron is that it can combine with oxygen to form iron oxide, the chemical name of rust.
Detailed explanation-5: -Answer and Explanation: The correct option is (d), Reacting with hydrogen to form a gas is an example of a chemical property. Chemical properties refer to how an element or compound reacts with other elements or compounds.