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Which statement BEST explains why coal is used to generate electricity despite the amount of pollution produced by burning coal?
The elements in the group react with oxygen in similar ways.
gas formation
Gold has a density of 19.3 g/cm3.
physical state
150 grams
D water
D Sodium and chlorine atoms bond chemically.
Compared to other fuels, coal is relatively cheap and plentiful.
When table salt (NaCl) is produced, which of the following BEST describes the actions of the sodium (Na) and chlorine (Cl) atoms?
The elements in the group react with oxygen in similar ways.
gas formation
Gold has a density of 19.3 g/cm3.
physical state
150 grams
D water
D Sodium and chlorine atoms bond chemically.
Compared to other fuels, coal is relatively cheap and plentiful.
Which of these is one similarity of the elements in the first group of the periodic table?
The elements in the group react with oxygen in similar ways.
gas formation
Gold has a density of 19.3 g/cm3.
physical state
150 grams
D water
D Sodium and chlorine atoms bond chemically.
Compared to other fuels, coal is relatively cheap and plentiful.
Which substance is a compound?
The elements in the group react with oxygen in similar ways.
gas formation
Gold has a density of 19.3 g/cm3.
physical state
150 grams
D water
D Sodium and chlorine atoms bond chemically.
Compared to other fuels, coal is relatively cheap and plentiful.
Which would provide the best evidence that a chemical reaction had occurred?
The elements in the group react with oxygen in similar ways.
gas formation
Gold has a density of 19.3 g/cm3.
physical state
150 grams
D water
D Sodium and chlorine atoms bond chemically.
Compared to other fuels, coal is relatively cheap and plentiful.
A chemistry teacher combines 20 grams of lemon juice with 25 grams of baking soda in a flask covered with a balloon. The flask and balloon have a combined mass of 105 grams. What is the mass of the entire setup after a reaction has occurred?
The elements in the group react with oxygen in similar ways.
gas formation
Gold has a density of 19.3 g/cm3.
physical state
150 grams
D water
D Sodium and chlorine atoms bond chemically.
Compared to other fuels, coal is relatively cheap and plentiful.
Which changes when gases condense to form liquids?
The elements in the group react with oxygen in similar ways.
gas formation
Gold has a density of 19.3 g/cm3.
physical state
150 grams
D water
D Sodium and chlorine atoms bond chemically.
Compared to other fuels, coal is relatively cheap and plentiful.
Which best represents a physical property of a substance?
The elements in the group react with oxygen in similar ways.
gas formation
Gold has a density of 19.3 g/cm3.
physical state
150 grams
D water
D Sodium and chlorine atoms bond chemically.
Compared to other fuels, coal is relatively cheap and plentiful.
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