yes
Chemical changes
if during a change the chemical composition of the reactants change or any new products are formed then the reactant is said to undergo chemical change.if the state, color, phase or any other physical properties of the reactant change without any change the chemical composition of the reactants or formation of any new substances then it is said to undergo physical change
matter
Glass is not a change of any sort. It is a mixture of substances that can undergo both physical and chemical changes
No, it is a physical reaction because it doesn't undergo any change in chemical properties.
No.
Yes silicon can undergo physical and chemical changes.
All substances have distinct physical and chemical properties, and may undergo physical or chemical changes. Physical properties, such as hardness and boiling point, and physical changes, such as melting or freezing, do not involve a change in the composition of matter.
Chemical changes
Yes.
if during a change the chemical composition of the reactants change or any new products are formed then the reactant is said to undergo chemical change.if the state, color, phase or any other physical properties of the reactant change without any change the chemical composition of the reactants or formation of any new substances then it is said to undergo physical change
Hg is not a change, it is an element. It can undergo changes, both physical and chemical.
Chemical properties describe how a substance will undergo chemical reactions and with what. Chemical changes are when one or more substances change to some other substance or substances.
Copper sulfate is a substance, not a change. It can undergo physical and chemical changes.
Water is not a change of any sort. It is a substance. It can undergo physical and chemical changes.
matter
Bread is not a change. It is a mixture of substances that can undergo physical and chemical changes.