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Science Do as instructed[4M]

Elements, Compounds and Mixtures · Maharashtra Board STD 7 (MSBSHSE - Semi English Medium). 2 questions.

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Do as instructed[4M]

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2 questions · self-marked practice — reveal the answer and mark yourself.

Question 14 Marks
Write the names of elements from the following symbols:
Zn, Cd, Xe, Br, Ti, Cu, Fe, Si, Ir, Pt.
Answer
SymbolElement
ZnZinc
CdCadmium
XeXenon
BrBromine
TiTitanium
CuCopper
FeIron
SiSilicon
IrIridium
PtPlatinum
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Question 24 Marks
In day to day life we come across many things in our surroundings. We touch them, we study their properties. Are all these things made from only one kind of matter or from more than one kind of matters?
Answer
  1. Things are made from only one kind of matter or may be made from more than one kind of matter.
  2. When a matter is made up of only one type of atoms it is called an element.
  3. We find many elements in our surroundings.
  4. But we also see many substances which are made up of two or more elements they are called compounds.
  5. Also we see many substances which are formed by physically mixing two or more elements, they are called mixtures.
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