Fill in the blanks:
1. Burning of wood to ashes is
change.
2.
is the fourth state of matter.
3. All liquids have a definite
4. Sugar turns into
on heating.
5. During a chemical change, rearrangement of
takes place.
Alternative Response Type:
Answers
1. chemical
2. Plasma
3. volume
4. caramel
5. atoms
Explanation:
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1)Burning of wood is a chemical change as new substances which cannot be changed back (e.g. carbon dioxide) are formed.
2)Plasma, in physics, an electrically conducting medium in which there are roughly equal numbers of positively and negatively charged particles, produced when the atoms in a gas become ionized. It is sometimes referred to as the fourth state of matter, distinct from the solid, liquid, and gaseous states.
3)In a liquid, the particles are still in close contact, so liquids have a definite volume. However, because the particles can move about each other rather freely, a liquid has no definite shape and takes a shape dictated by its container.
4)When simple sugars such as sucrose (or table sugar) are heated, they melt and break down into glucose and fructose, two other forms of sugar. Continuing to heat the sugar at high temperature causes these sugars to lose water and react with each other producing many different types of compounds.
5)In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change.