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Chemistry

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Vilma Hirthe

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Cards in this guide (10)
The reactant represents the starting materials in a chemical reaction

The answer is "True"

What part of the chemical formula indicates the number of molecules or atoms involved

coefficients

By what process is the DNA code duplicated

replication

How many types of single-replacement reactions are there

3

What are used to show what happens during a chemical reaction

CHEMiCAL SyMBOlS

How many chromosomes are in a normal human body

There are 23 pairs of chromosomes in a normal human body which means 46 chromosomes. People with down's syndrome have 47 chromosomes.

During meiosis twin chromosomes split apart and move to the

poles

Which type of chemical reaction often produces energy in the form of light heat or electricity

Exothermic Reaction

Which chemical formula contains 6 copper Cu atoms

3Cu

2

What is a chemical equation in which both the reactant an product have an equal number of atoms of a given element

balanced equation

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