Create a webpage to give the definitions of any five terms from your science book class 10 ncert. also insert equations related to the terms on the web page using the <sub> tag.
Answers
Answer:
“Facts are not science — as the dictionary is not literature.”
BY DEEPTHIKA TALLURI
CHAPTER1
Chemical Reactions and Equations
Consider the following situations of daily life and think what happens
when –
milk is left at room temperature during summers.
an iron tawa/pan/nail is left exposed to humid atmosphere.
grapes get fermented.
food is cooked.
food gets digested in our body.
we respire.
In all the above situations, the nature and the identity of the initial
substance have somewhat changed. We have already learnt about physical
and chemical changes of matter in our previous classes. Whenever a chemical
change occurs, we can say that a chemical reaction has taken place.
You may perhaps be wondering as to what is actually meant by a
chemical reaction. How do we come to know that a chemical reaction
has taken place? Let us perform some activities to find the answer to
these questions.
Figure 1.1
Burning of a magnesium ribbon in air and collection of magnesium
oxide in a watch-glass
Activity 1.1
CAUTION: This Activity needs
the teacher’s assistance. It
would be better if students
wear eye protection.
Clean a magnesium ribbon
about 2 cm long by rubbing
it with sandpaper.
Hold it with a pair of tongs.
Burn it using a spirit lamp or
burner and collect the ash so
formed in a watch-glass as
shown in Fig. 1.1. Burn the
magnesium ribbon keeping it
as far as possible from your
eyes.
Plz mark me as brainliest........
Answer:
hii
Explanation:
Question 1. HTML is a markup language. Expand the term HTML. CBSE 2002
Answer: HyperText Markup Language.
Question 2. Give examples of a container element in HTML. CBSE 2009
Answer: <HEAD>, <TITLE>, <BODY>.