What is the symbol for Hydrogen?
H
The name of this compound is?
CO2
Carbon dioxide
The chemicals at the beginning of a reaction are called what?
Reactants.
What does DNA stand for?
Deoxyribonucleic acid
When is Tony's Birthday (they cannot answer)
21 June
The charge for oxygen is?
-2
The name of this compound is?
BaCl2
Barium Chloride
A precipitate is?
A solid that forms when 2 liquids/solutions are added together.
Identify the 4 bases in DNA
Adenine, Thymine, cytosine, guanine
How many planets are in the solar system?
8 - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
What is the name given to elements in the second column of the periodic table?
Alkali earth metals
Mg2+ + Cl-
Formula for magnesium chloride
MgCl2
Write the word equation for copper carbonate decomposing to form carbon dioxide and copper oxide.
Copper Carbonate -> carbon dioxide + copper oxide
Identify the building block of DNA
nucleotide
When is Didi's Birthday (they cannot answer)
20th September
What element has the symbol Si?
Silicon
Write the name for Mg3(PO4)2
magnesium phosphate
2H2O2 --> 2H2O + O2
What type of reaction is this?
Decomposition
write the complemetary bases to the following sequence:
ACTTAG
TGAATC
How many eyes do bees have?
5
The number of protons, neutrons and electrons for fluorine
p-9
e-9
n-10
Write the name for this compound: CuSO4
Copper sulfate
What type of reaction is this? - carbon and oxygen make carbon dioxide
combination or synthesis
Define Genome
the entire set of DNA in an organism, humans have 23 pairs of chromosomes
When is Reece's Birthday (they cannot answer)
9th November
How do you find the amount of neutrons in an atom?
Atomic mass - atomic number
Write the ion for hydroxide
OH-
Write down factors that affect rate of reaction?
surface area, temperature, catalyst, agitation, concentration
Explain the first step in DNA replication
Hydrogen bonds break.
Double helix strand “unzips” (by an enzyme called HELICASE)
Nitrogen bases are now exposed.
How tall is uluru? (nearest gets it)
348 m tall
What column do halogens belong in?
Group 17
Formula for lithium oxide
Li2O
if the surface area is larger is the reaction rate slow or fast?
fast
What makes chromosomes homologous?
The same length
Have the centromere (the point where the two chromosomes join) in the same position.
Have genes for characteristics at the same location along their length.
When is Helya's birthday (they cannot answer)
21st July
what group do these elements belong to:
calcium
sodium
silicon
calcium - alkaline earth metals
sodium - alkali metals
silicon - group 14
true or false:
It is illegal to have only one guinea pig in Switzerland.
True, they get lonely :(
write the chemical equation for magnesium reacting with copper sulfate
Mg(s) + CuSO4(aq) → MgSO4(aq) + Cu(s)
Name 3 symptoms of having Klinefelter syndrome
lower IQ, tall stature, poor muscle tone, Small testes/infertility, male breasts, reduced secondary sexual characteristics
When is Miss Smiths Birthday?
20th July