6. TRUE/ FALSE - In the 1800s chemists were keen to try and find patterns in the elements that they knew about.
True
False
7. What is an element made up of?
An element is made up of just one type of atom
Protons, nucleus, neutrons and electrons.
nucleus and cytoplasm
8. The mass number is?
Nucleus mass number.
The total number of electrons and proton in an atom.
The number of protons and electrons.
Another name for the atomic number of an atom.
9. Where about in the atom is the nucleus positioned?
On the right hand side
Centre of the nucleus/ middle
On the left hand side
At the top of the atom
10. What is an isotope?
ifferent atomic forms of the same element, which have the same number of protons but different numbers of neutrons.
Lots of elements
different atomic forms of the same element with the same number of electrons and different number of protons
isotopes are scientific formulas used to explain the mass of elements
11. Which points best explain what the electrons are?
Electrons move around the atom. They are he same size as the nucleus. They have a lot of mass.
They have a negative charge. They have virtually no mass. They occupy shells (energy levelaround the nucleus. Electrons follow the configuration 2,8,8.
electrons are another version of protons. They are extremely small. The follow the configuration rule of 2,8,8.
12. TRUE/ FALSE/partially - Before mendeleev's discovery scientists had no idea about the structure of atoms, but they could measure the relative atomic mass of each element.
True
not sure
False
was false but then it became true
13. Define relative abundance
A type of element measured using mm or ml
Relative abundance just means how much there is of each isotope compared to the total amount of the element in the world.
The relative atomic mass plus the mass number
14. Name one thing you cannot do with an element?
Building material
You can’t convert one type of element into another using chemical reactions.
Not sure?
use in cars
15. In 1869, a russian scientist called Dmitri Mendeleev arranged about 50 elements that were known according to their properties and properties of their compounds to make a table of elements. Mendeleev's table placed elements with similar chemical prope
False, because mendeleev left gaps in his periodic table also he was not aware of the properties
True
False
16. What is the atomic number?
Not sure?
number of neutrons.
The number of protons and electrons.
proton weight.
Another name for the mass number of an atom.
17. What does the nucleus contain?
nucleus
oxygen and nitrogen
Protons and neutrons
electrons
18. What would happen if isotopes had a different number of protons?
It would form a covalent bond as it is
If they had a different number of protons, they’d be different elements altogether.
