1. What element is considered as the only liquid metal?
_2. You dipped a red litmus paper into an acid, what color will be observed in the litmus
paper?
3. It is classified as elements and compounds.
CĂ 4. Calcium is an element important in our bones. What is the symbol of Calcium?
5. It contains the characteristics of a metal and a nonmetal.
6. When an indicator was put in Sprite it changes into pale red color. What is the nature of
the sample Sprite?
_7. It is made up of two or more elements chemically combined and cannot be separated by
physical means.
8. They are considered as a pure substance and made up of only one kind of atom.
9. A process that resulted when an acid was added into a base.
10. It is an indicator taken from lichens.
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Answer:
1.Mercury is the only liquid metal found at normal temperatures.
2.BLUE -
Litmus indicator solution turns red in acidic solutions and blue in alkaline solutions. It turns purple in neutral solutions.
3.Elements are the simplest complete chemical substances. Each element corresponds to a single entry on the periodic table. An element is a material that consists of a single type of atom. ... A compound consists of two or more types of elements held together by covalent or ionic bonds.
4.SYMBOL CA -
Calcium is a chemical element with symbol Ca and atomic number 20. Classified as an alkaline earth metal, Calcium is a solid at room temperature.
5.The metalloids are a unique group of elements that share properties of both metals and nonmetals. They're also called the semimetals because of the shared properties of these elements along the dividing line between metals and nonmetals. The elements that may be classified as metalloids include: Boron_ (B)
7.Compounds -
Compounds are made up of two or more elements combined in definite quantities and in definite proportions by chemical bonds. Substances are pure forms of matter that cannot be separated or purified further by physical means; include compounds and elements.
8.An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.
9.A process that resulted when an acid was added into a base.
10.Litmus paper is obtained from lichens. it is used to identify whether the given solution is acid or bases.
Explanation
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