Atoms and Ions
What are the three parts of an atom?
Protons, neutrons and electrons
Is vinegar an acid or an alkali?
An acid
What is a cell?
The smallest unit of life
Photosynthesis
What is the independent variable in an experiment?
The part that is changed
What is the charge and mass of an electrons
-1 charge
0 mass
What colour does acid go on the ph scale?
Red/Orange
What is an organelle?
A part of a cell
Which part of the plant carries water up to the leaves?
The xylem
What is a control variable in an experiment?
The part of the experiment that is kept the same
What is an ion?
An atom that has lost or gained an electrons and therefore has a charge
What is the Ph of a neutral substance, such as water?
7
Name three examples of an animal specialized cell
Red blood cell, sperm cell, nerve cell etc
Write out the correct word equation for photosynthesis
carbon dioxide + water -> oxygen and glucose
What is the dependent variable in an experiment?
The part of the experiment that is measured
What is the overall charge of an atom and why?
0
Equal amounts of positive protons and negative electrons
A strong acid is dangerous because they are.....
corrosive
What part of the cell carries out respiration?
Mitochondria
What chemical is used to test for starch
Iodine
What is an anomaly
A result that does not fit the pattern or the trend of the data
Draw the electrons structure of a sodium atom, and then a sodium ion
Teacher Judge
What type of reaction occurs when an acid is added to an alkali (hint they cancel each other out...)
A neutralisation reaction
Draw a labelled plant cell
Teacher Judges
Name three factors that can be changed to increase the rate of photosynthesis
light intensity, CO2 availability, temperature, water availability
Explain how an experiment can be made more accurate?
Repeat and calculate a mean