Answer:
Characteristics such as melting point, boiling point, density, solubility, color, odor, etc. are physical properties. Properties that describe how a substance changes identity to produce a new substance are chemical properties. ... Physical and chemical properties can be used to classify a substance as ionic or molecular.
Mg + O2 ➡️ MgO — we need to have the same emount of each element on both sides. On the left we have 1 Mg and on the right 1 Mg, so thats fine, but 2 O on the left and 1 O on the right, so we place a coefficient of 2 in front of the compound which is “lacking” O.
Mg + O2 ➡️ 2MgO
Now the O is okay, but we have 1 Mg and 2 Mg, so we need to put a 2 in front of the Mg thats “lacking”.
2M + O2 ➡️ 2MgO
Now it is balanced :)
Answer:
See explanation
Explanation:
We must take into account the order of stability of free radicals. The order of stability of free radicals is;
Tertiary>secondary>primary> methyl.
As a result of this, structure 1 involving a tertiary radical leads to the more abundant product as shown.
Answer:
A
Explanation:
An element is a substance that cannot be broken down into simpler substances using ordinary chemical procedures. To disintegrate an element, procedures like nuclear reactions needed to be used.
In fact, it was thought of that the elements are indivisible during the days of Dalton, but advances in science and technology has shown that these elements could be broken down albeit not easily