Skip to content
Back to quiz
6. What is a neutron
- A component of the nucleus with a relative mass number of 1 and no charge
- A component of the nucleus with a relative mass number of 1 and a positive charge
- A component of the nucleus with a relative mass number of 1 and a negative charge
7. Ion
- An electrically charged atom, or goup of atoms formed by the loss or gain of one or more electrons
- A substance composed of two or more elements
- A class of substances that cannot be seperated into simpler substances by chemical means
8. What is a nucleus
- The centre of an atom composed of protons and neutrons possessing 89.9% of the mass
- The centre of an atom composed of protons and neutrons, possessing 99.9% of the mass
- the centre of a n atom composed of protons and neutrons, possessing 90% of the mass
9. Element
- A class of substances that cannot be seperated into simpler substances by chemical means
- A group of atoms or an electrically charged atom formed by the loss or gain of one or more electrons
- A substance composed of two or more elements
10. What is Kinetic Energy
- a measure of how fast reactants become products
- energy that an object possesses by being in motion
- Total area of exposed surfaces
11. What is the atomic number
- The number of electrons in the nucleus of an atom. Places it on the periodic table
- The number of protons in the nucleus of an atom. Places it on the periodic table
- The number of neutrons in the nucleus of an atom. Places it on the Periodic table
12. What is a compound
- A class of substances that cannot be seperated into simpler substances by chemical means
- A substance composed of two or more elements
- An electrically charged atom or group of atoms, formed by the loss or gain of one or more electrons
13. What is an atom?
- least amount of energy required to start a chemical reaction
- is the defining structure of an element. cannot be broken by any chemical means
- that speeds up a chemical reaction but is not used up in that reaction
14. What is an Anion
- A negatively charged atom or group of atoms caused by losing one or more electrons
- A positively charged atom or group of atoms caused by an atom or group of atoms losing one or more electrons
- A neutrally charged atom or group of atoms caused by losing one or more electrons
15. What is a catalyst?
- is the defining structure of an element. cannot be broken by any chemical means
- a substance that speeds up a chemical reaction but is not used up in that reaction
- least amount of energy required to start a chemical reaction
16. What is collision theory
- The theory that in order for a chemical reaction to occur two or more particles must collide with sufficient energy and at the correct orientation
- The theory that matter is made up of tiny particles which are constantly moving
- is the measure of how much there is of a given substance
17. What is concentration
- The theory that in order for a chemical reaction to occur two or more particles must collide with sufficient energy and at the correct orientation
- is the measure of how much there is of a given substance
- The theory that matter is made up of tiny particles which are constantly moving
18. What is a proton
- component of the nucleus with a relative mass number of 0 and charge of 0
- Component of the nucleus with a relative mass number of 1 and charge of +1
- component of the nucleus with a relative mass number of 1 and a charge of -1
19. What is the atomic mass
- The total number of protons and electrons in the nucleus
- The total number of protons and neutrons in the nucleus
- The total number of electrons and neutron in the nucleus
20. What is activation energy?
- is the defining structure of an element. cannot be broken by any chemical means
- least amount of energy required to start a chemical reaction
- a substance that speeds up a chemical reaction but is not used up in that reaction