Y8 Science

• Acceleration = change in velocity / time
• Magnetic South = Geographical North
• Absolute zero is where particles stop vibrating
• Atomic number = number of protons
• Number of electrons = number of protons
• Relative Atomic Mass = number of protons + neutrons
• Isotopes are atoms with the same atomic number but different mass numbers.
• Horizontal rows = periods
• Vertical rows = groups
• Covalent bonds happens between non-metals
• Covalent bonds share electrons
• Ionic bondings happens between a metal and a non-metal
• In ionic bonding, Metals tend to give away electrons whilst non-metals recieve
• Cell wall - structure and support
• Vacuole - contains cell sap, keeps cell turgid
• Cell membrane - controls what goes in and out the cell
• Chloroplast - contains chlorophyll for photosynthesis
• Cytoplasm - site of chemical reactions, anaerobic respiration
• Nucleus - contains DNA
• Mitochondria - site of aerobic respiration
• Carbon dioxide + water = oxygen + glucose