Elements, mixtures and compounds (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What are the three main groups that all substances can be classified into?
What are the three main groups that all substances can be classified into?
Elements, compounds & mixtures
What is an atom?
What is an atom?
The smallest piece of an element
What is a pure element made from?
What is a pure element made from?
Only one type of atom
How must chemical symbols for elements be written?
How must chemical symbols for elements be written?
Start with capital, may have small letter
Approximately how many different elements are there?
Approximately how many different elements are there?
About 100
What holds atoms together in a compound?
What holds atoms together in a compound?
Chemical bonds
In what proportions do elements combine to form compounds?
In what proportions do elements combine to form compounds?
Fixed proportions
How do compound properties compare to their original elements?
How do compound properties compare to their original elements?
Completely different
How can compounds be separated back into elements?
How can compounds be separated back into elements?
Chemical reactions
What is a mixture?
What is a mixture?
Substances mixed but not joined
How can mixtures be separated?
How can mixtures be separated?
By physical methods
In the iron and sulfur mixture, what happens to iron's magnetic property?
In the iron and sulfur mixture, what happens to iron's magnetic property?
It stays magnetic