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Changes of state are considered physical changes because?
Physical changes are changes that don't change the structure of the individual molecules. Though heating a liquid to a gas will change how the molecules are bound to each other, the individual molecules will not change. This is contrasted from a chemical change, where the atoms of the molecules are rearranged.
Are most chemical changes seen or not seen?
Most chemical changes happen between molecules, so they are unseen.
What changes shape in a chemical reactions?
New molecules are formed.
When water freezes at 0 degrees Celsius describe chemical properties?
When water freezes at 0 degrees Celsius, the hydrogen bonds in water molecules reorganize into a crystalline structure, resulting in a solid, ice. The chemical composition of the water molecules remains the same, but the arrangement changes to form a lattice structure, which causes the expansion and density decrease associated with freezing.
Classify as chemical and physical change-freezing of water?
Freezing of water is a physical change because it involves a change in state from liquid to solid without altering the chemical composition of water. The molecules in water rearrange to form a crystalline structure in the solid state but remain as H2O molecules.
do oreos undertake any chemical changes?
Do Oreos undertake any chemical changes? Yes. How can Oreo be a chemical changes? Cooking involve chemical reactions, modifications of chemical molecules.
When water changes to ice the link up of atoms does or does not change?
The bonds between hydrogen and oxygen atoms of individual water molecules do not change when liquid water changes to ice. This is a physical change called freezing, and does not cause any chemical changes to occur. Only chemical changes can cause changes in chemical bonds.
Can molecular structure of sunlight change random?
Sunlight is not made of molecules and therefore has no "molecular structure."Sunlight can induce certain types of chemical changes in molecules that it hits; however, these are not "random" but fall into certain well-defined classes.
Changes of state are considered physical changes because?
Physical changes are changes that don't change the structure of the individual molecules. Though heating a liquid to a gas will change how the molecules are bound to each other, the individual molecules will not change. This is contrasted from a chemical change, where the atoms of the molecules are rearranged.
How can Oreo be a chemical changes?
Cooking involve chemical reactions, modifications of chemical molecules.
How are machanical and chemical weathering different?
Mechanical weathering is a process which physically changes the appearance of a rock or structure. Chemical weathering is a process which changes the chemical composition of a rock or structure.
What is chemical physics?
Physical is when a rock or something changes its shape and not structure. Chemical is when a rock or something changes its entire format like a shape and structure.
Are most chemical changes seen or not seen?
Most chemical changes happen between molecules, so they are unseen.
Chemistry is primarily concerned with the composition of and changes in what?
Chemistry is primarily concerned with the composition of matter and the changes that occur in that matter. It focuses on understanding the structure of atoms, molecules, and how they interact to form new substances through chemical reactions.
What changes shape in a chemical reactions?
New molecules are formed.
Did the Greeks explain why chemical changes occurred?
Very probable not
Is making jam chemical or physical changes?
Making jam involves both chemical and physical changes. Chemical changes occur when the fruit's natural sugars break down during cooking, leading to caramelization and the creation of new complex flavors. Physical changes occur when the mixture thickens as pectin molecules form a gel-like structure to give the jam its characteristic texture.
