Electricity
What do we call the flow of electrons in a electric circuit?
Current
List the 2 subatomic particles that are located in the nucleus.
proton - neutron
State the symbol of iron in the periodic table.
Fe
Carbon Dioxide - Water - Sunlight
Give one example for unicellular and multicellular organisms
unicellular: bacteria - amoeba - paramecium
multicellular: plant - animal
Give 2 examples of conductors.
metal - iron - water
State the charge of an electron.
negative
hydrogen and oxygen
In which part of the plant does photosynthesis occur?
leaves
State the organelle that creates energy for the cell.
Mitochondria
What do we call an object that doesn't allow electricity to flow?
insulator
State one way to classify elements in a periodic table.
1) metal - nonmetal - metalliod
2) liquid - gas - solid
State the chemical formula for salt
NaCl
State the name of the sap found in the phloem.
elaborated or organic
State the name of the cell that help the brain and body communicate together.
neuron - nerve cell
What type of circuit do we have if one device is off then all devices turn off also?
series circuit
Identify if CO2 is an element or compound.
compound since it is made up of 2 elements.
State 2 examples of acids.
lemon - battery acid - fruits - vinegar - stomach acid
Indicate the name of the conducting vessel that carries mineral sap from the roots to leaves.
xylem
The heart belong to which organ system?
circulatory - cardiovascular
What do we call part of the circuit that looks like a circle with an x in the middle?
electric device
State the name of the element known as the "liquid silver"
mercury
State the equation of neutralization.
acid + base = salt + water
State the chemical equation of the process of photosynthesis.
water + carbon dioxide + sunlight = oxygen + sugar
List the 2 wastes that our body excretes and which organs excrete them.
1) carbon dioxide: lungs
2) sweat: skin
3) urine: kidneys
4) undigested food: large intestine