Reactions
Identify the reactant/s in this equation
2H2(g)+O2(g)−>2H2O(l)
2H2(g)+O2(g)
What is the most abundant element in the universe
Hydrogen
Which subatomic particle causes elements to be radioactive
Neutrons
Explain the pH scale include acids, bases and neutral
Acid 0-6
Neutral 7
Base 8-14
238 + 621 =
859
Identify the product/s in this equation
2H2(g)+O2(g)−>2H2O(l)
2H2O(l)
What is the most abundant element on Earth
Oxygen
An element with different numbers of neutrons is called a:
Isotope
What colour are acids usually identified by
red
What type of fruit is a banana?
Berry
When ammonium nitrate is added to a beaker of water, the beaker quickly becomes very cold as the ammonium nitrate dissolves in the water. This is an example of an:
Endothermic Reaction
What is the centre of an atom called
Nucleus
Isotopes that are radioactive are called:
Radioisotopes (radioactive isotopes)
What are 3 properties of a base?
bitter, feel slippery, corrosive, change the color of litmus from red to blue, can conduct electricity,
What year was Instagram launched?
2010
What are the products of a complete combustion reaction?
Carbon dioxide, water
What makes up the majority of the atomic mass of an atom
Protons + Neutrons (Nucleus)
These particles are helium nuclei that contain two protons and two neutrons, they are positively charged.
Alpha Particles
What special indicator is widely used to measure the pH of a solution?
Universal indicator
Who was the first Prime Minister of Australia?
Edmund Barton
When a piece of magnesium ribbon is burnt in air, it reacts with the oxygen in the air. The product of the reaction is a white powder, magnesium oxide. If all of the white powder produced is collected on a dish and weighed on an accurate electronic balance, it will be found that its mass is:
More than the mass of the magnesium ribbon
What happens when an atom loses and electron, and what is it called?
Positive charge, ion (anion)
These particles are the same size and mass as electrons, can have a negative or positive electric charge and can travel at speeds as high as 99 per cent of the speed of light.
Beta Particles
What happens when you add an acid to a base?
Neutralisation.
Products = salt and water (sometimes CO2)
What is the least common colour of M&M?
Brown