5 Written questions
5 Matching questions
- How many electrons can the 2nd and 3rd shell of an atom hold?
- What is a molecule?
- What is a neutron?
- What are isotopes?
- What is ion?
- a up to 8 electrons.
- b Elements that exist in different forms
Forms of an element that differ in mass
Same num of protons and electrons but diff num of neutrons
- c Atoms held together by covalent bonds.
- d an electronically neutral subatomic particle.
- e The term for atoms that are electronically charged as a result of gaining/losing electrons.
5 Multiple choice questions
- Oxygen, carbon, hydrogen, and nitrogen.
- Changes is the chemical compound of matter.
- Formed when a particularly positive atom from one polar molecule is attracted to the partially negative atoms in another molecule.
5 True/False questions
What is the atomic number? → The smallest unit of matter that still retains the properties of an element.
How many electrons can the inner shell of an atom hold? → up to 8 electrons.
The tendency of water molecules to stick to each other is called → cohesion
What is a proton? → an electronically neutral subatomic particle.
The number of covalent bonds an atom can form is equal to what? → the number of electrons it has.