1. In the models, what particles do the colored and plain sesame seeds represent? What particles do the poppy seeds represent

1. What elements are carbohydrates generally composed of?

How many mol is 36g NO2

When salt dissolves in water, what type of substance is formed?

Why do some atoms form positive ions and others form negative ions?

Sugar dissolving in tea is it chemical or physical change?

Nonpolar materials have separated positive and negative areas. True False

Name the 12 elements in the periodic table

Which of the following statements is true? Water is easily polluted because it can dissolve harmful chemicals O When water freezes, it contracts and becomes more dense.

What causes combustion in cars?

A potassium atom (atomic number 19) and a bromine atom (atomic number 35) can form a chemical bond through a transfer of one electron. The potassium ion that forms has 18 electrons. What best describes the bromide ion that forms?