1
Q
How many different substances are catalogued by scientists?
A
millions
2
Q
What are all substances made of?
A
atoms
3
Q
How many different types of atom are found naturally on Earth?
A
100 different types, which can combine in a variety of different ways, giving all those different substances.
4
Q
What are a relatively small number of substances made up of?
A
Only one type of atom, (elements.)
5
Q
What is the smallest part of an element that can exist?
A
An atom
6
Q
Approximately how many different elements are there?
A
about 100 different elements.
Science
flashcards
Decks in class (31)
# Cards
-
Food and Diet10
-
Cells and Respiration10
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Plants12
-
States of matter13
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Rocks11
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Sound12
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Energy13
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Forces8
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Metals9
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Magnets13
-
Electricity12
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Space science and astronomy11
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Space science and astronomy p212
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Space science and astronomy p31
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Water Waves6
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renewable and non renewable energy resources7
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Renewable energy sources9
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Using energy10
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test revision6
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Structures of plant and animal cells8
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Cells4
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Differences between bacterial cells and plant cells6
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How to make a microscope slide5
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Diffusion5
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Osmosis and active transport6
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Atoms6
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History of the atom4
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Enzymes7
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Active Site4
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Stem cells and cell division7
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Periodic Table16
