Question

synthesis reactions are characterized by the * following general equation: a + bc -----> ab + c
true
false
elements in the same group have similar * chemical properties.
true
false
the replicated chromosomes are separated * by spindle fibers during
prophase.
metaphase.
anaphase.
telophase.

Explanation:

• For the first question: The general equation \(A + BC

ightarrow AB + C\) represents a single - replacement reaction, not a synthesis reaction. A synthesis reaction has the form \(A + B
ightarrow AB\).

• For the second question: Elements in the same group (vertical column) of the periodic table have the same number of valence electrons, which leads to similar chemical properties.
• For the third question: During anaphase of cell division, the replicated chromosomes (sister chromatids) are separated by the spindle fibers and pulled to opposite poles of the cell. In prophase, chromosomes condense and the spindle forms. In metaphase, chromosomes line up at the equator. In telophase, new nuclear envelopes form.

Answer:

• First question: B. False
• Second question: A. True
• Third question: C. anaphase