Recall Flashcards
Learn all 30 science recall questions.
Which two sub-atomic particles are found in the nucleus of an atom and what are their relative charges.
Protons +1
Neutrons =
What do we call the part of an atom where electrons are found?
Energy level/shell
What do you call the columns and rows on the periodic table?
The columns are called groups and the rows are called periods?
What do all the elements in the same group on the periodic table have in common?
They have the same number of electrons on the outer-shell giving them similar properties.
What does the atomic number tell you about an element
How many protons there are in one atom of that element.
What does the mass number tell you about an element?
How many protons and neutrons are in one atom of an element.
What is an atom?
The smallest part of an element that can exist.
What is an element?
A substance made from only one type of atom.
What is a compound?
Two or more different elements chemically combined in fixed proportions?
What is a mixture?
Two or more elements or compounds not chemically combined.
What is an isotope?
Atoms of the same element with a different number of neutrons.
What does the law of the conservation of mass state?
The mass of the reactants and the mass of the products in a chemical reaction are equal.
What equation is used to calculate magnification?
Image size/Actual size.
Three disadvantages of an electron microscope.
1) You have to have a thin coating of metal added to the specimen before putting them in a vacuum chamber.
2) They are large and cannot be easily moved.
3) They are very expensive.
List the organs from the digestive system in order that food passes through them.
Mouth, Oesophagus, Stomach, The small then large intestine, Rectum, Anus.
