Sodium reacts with water to form a colorless solution of sodium hydroxide and hydrogen gas.
Scientists use the physical and chemical properties to help them identify and classify matter. These physical and chemical properties are in a macro-perspective, in which these matter contains compounds, elements and atoms. Hence, matter can be classified in various ways, <span><span>
1. </span>Atomic number either atomic mass each element has</span>
<span><span>2. </span>By substance of that matter either pure substance or mixed substance</span> <span>
3. If they cannot reduce a certain substance into a much smaller quantified atomic structure then they they’ll use (2) to identify and classify it.</span>
What were Lamarck's ideas about evolution and why were those ideas incorrect
C. a plane for forming a scientific hypotheses
The answer is -1. 2 subtraction signs next to each other for an addition sign
