Скачать или смотреть Unit#5 Exercise Questions| Oxford Secondary Science 1 by Terry Jennings

Subject: General Science

Book: Oxford Secondary Science 1

Unit:5 (Atoms, molecules, mixtures and compounds)

Topic: Exercise Q/A

Page no: 55

1.     What is an element? Name five things which are made using single elements.

2.     What are general properties of metals? Give the names and symbols of five metals and five non metals

3.     An element is solid, it conducts heat and electricity. and it is shiny when it is freshly cut. What does this tell you about the element?.

4.     What is an alloy

5.     Why is na alloy considered to be a mixture and not a compound?

6.     What are the differences between a compound and a mixture? Give three examples of each.

7.     Group the following substances into elements, mixture and compounds:

8.     In the left hand column are the meanings of some key words in science. In the right hand column are the key words, but they are muddled up. Can you match each definition to the word it refers to?

9.     The table below shows the elements that go to make up a typical human body. Notice that most of them are non metals.

      i.          Which three elements does your body contain most of?

    ii.          Arrange the elements in order of size, with the largest mass at the top of your list.

  iii.          What is the total mass of the body in the table above?

   iv.          What percentage of the body mass consists of non metals?


unit#5
Atoms, Molecules, Mixtures and Compounds
TOPICS: Unit#5 Exercise Questions
Oxford Secondary Science 1 by Terry Jennings

#science #elements #Distillation #crudeoil