Have an account?
What are the 3 particles that make-up the atom?
protons, neutrons, and isotopes
neutrons, isotopes, and electrons
positives, negatives, and electrons
protons, neutrons, and electrons
What is the number of protons that the element in this image contain?
How many neutron are in the atom "K"?
True or False? Neutrons have a negative charge
The proper formula for magnesium hydroxide:
How do the following two elements bond together?
The three types of nuclear radiation in order of increasing penetrating power are
alpha, beta, gamma
alpha, gamma, beta
beta, alpha, gamma
gamma, alpha, beta
Which best describes a chemical reaction?
Products --> Reactants
Reactants --> Products
Name the process that uses bacteria to extract metals from low grade ores
In Electrolysis of sodium chloride which 2 of the following are TRUE
Positive sodium ions move to the Positive electrode
Negative chloride ions move to the positive electrrode
Sodium chloride has to be molten or dissolved
Free electrons in the ions move to electrodes.
Which 2 are true?
Acid turns red litmus blue
Alkalis turn blue litmus red
Acids turn blue litmus red
Alkalis turn red litmus blue
Which 2 are true about this molecule?
It is the alkene ethene.
It has a double ionic bond
It has a double covalent bond.
Its formula is C2H6
What type of bonds in sodium chloride
Which one is a mixture?
In graphite each atom is
This is a
This image is
Wendy and Peppa Pig
Wendy and George
If you wanted to separate 2 liquids like alcohol and water you would use
The best way of purifying a salt you made and removing water is
Evaporation of water then filtration
Distillation then chromatography
Filtration then evaporation of water
Use a quadrat