The answer is sublimation.
Sublimation is the chemical process whereby a solid turns into a gas without first becoming a liquid.
The word sublimation comes from the Latin word sublimare which means "raised to a higher status."
Examples of sublimation include surface layer of snow and ice turning into steam or fog without melting and dry ice which is the solid form of carbon dioxide which also undergoes sublimation.
The low temperature and sublimation makes dry ice an effective coolant or cooling agent . One of its main advantages is that it has a lower temperature than water ice and also does not leave any residue.
Answer: Sublimation
Explanation: Gradpoint
Physical
Both
Answer:
Chemical
Explanation:
He used a scientific method to conduct his experiment.
He wrote his results down as four parts of the atomic theory.
He verified Democritus’s idea that matter was composed of atoms.
its A) He reinterpreted and retested Joseph Proust’s results.
Answer:
Exothermic
Explanation:
An exothermic reaction is defined as a reaction where heat/energy is released. In the formation of rust, iron reacts with oxygen gas to form ferric oxide and energy. Energy in the products side indicates a release of energy, thus making this reaction exothermic.
CH 4 (g)+2O 2 (g) CO 2 (g)+2H 2 O(g)
Answer: combustion
Explanation:
Combustion reactions can be identified by looking at the reactants and the products.
Usually, the reactants will be a hydrocarbon and oxygen. And the products will be CO2 and H2O
It has three nonbonding electrons.
It has five valence electrons available for bonding.
It has five nonbonding electrons.
Answer:The answer is "It has five valence electrons available for bonding". An element's group number is equivalent to the number of valence electrons that it has. This means that since phosphorus is found on group number 5, it has 5 valence electrons that participate in bonding. It also means that it needs 3 more electrons to complete its valency.