QuestionClassify these as physical or chemical properties: 1. Gold is shiny. 2. Gold melts at . 3. Gold conducts electricity. 4. Gold reacts with sulfur to form a black sulfide.
Studdy Solution
STEP 1
Assumptions1. The properties listed are for gold.
. We need to identify each property as either a physical or chemical property.
3. Physical properties can be observed or measured without changing the composition of matter. They are usually about appearance or behavior under different conditions, such as color, melting point, and electrical conductivity.
4. Chemical properties describe how a substance interacts with other substances, including its reactivity and flammability.
STEP 2
The first property says "Gold is shiny". This is an observation about the appearance of gold, which does not involve any change in its composition. Therefore, it is a physical property.
STEP 3
The second property says "Gold melts at ". This is a description of how gold behaves under a certain condition (heating), and does not involve any change in its composition. Therefore, it is a physical property.
STEP 4
The third property says "Gold is a good conductor of electricity". This is a description of how gold behaves in the presence of an electric field, and does not involve any change in its composition. Therefore, it is a physical property.
STEP 5
The fourth property says "When gold reacts with yellow sulfur, a black sulfide compound forms". This describes how gold interacts with another substance (sulfur), and results in a change in its composition (formation of a new compound). Therefore, it is a chemical property.
So, the properties are classified as follows1. Gold is shiny - Physical Property2. Gold melts at - Physical Property3. Gold is a good conductor of electricity - Physical Property4. When gold reacts with yellow sulfur, a black sulfide compound forms - Chemical Property
Was this helpful?
