Atoms and Mixtures Worksheet
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Atoms and Mixtures Worksheet
Inside an atom
Atoms contain three main subatomic particles. Protons and neutrons are in the nucleus; electrons occupy the space around it. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge.
- Electrons are found in the nucleus.
- The nucleus contains protons and neutrons.
- Neutrons have a negative charge.
- Every atom has the same number of protons.
Read the particle models
Each symbol represents an atom. Atoms joined by a line are bonded together. Different letters represent different elements.
Sample A ○ ○ ○ ○ All particles are separate atoms of the same element.
Sample B ○—● ○—● ○—● Each particle has two different atoms bonded together.
Sample C ○ ●—● ○—● Different kinds of particles are present together.
Mixtures in the clean-up
Some samples collected near the coast need sorting. Think about whether the substances are bonded and which physical methods could separate them.
3 printable pages
Page 1
Page 2
Page 3
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