1.
The basic building block of all living organisms.
2.
The control centre of a cell that contains genetic material.
3.
The part of a plant cell where photosynthesis happens.
4.
The powerhouse of the cell where respiration takes place to release energy.
5.
A group of similar cells working together to perform a specific function.
6.
A structure made of different tissues working together to do a vital job.
7.
An organism, like a green plant, that makes its own food using sunlight.
8.
The natural home or environment of an animal, plant, or other organism.
9.
The smallest part of an element that can exist.
10.
A pure substance made of only one type of atom.
11.
A substance made of two or more different elements chemically joined together.
12.
Two or more substances that are together but not chemically bonded.
13.
The process of a liquid turning into a gas when heated.
14.
The process of a gas turning into a liquid when cooled.
15.
A substance with a pH less than 7 that turns universal indicator red or yellow.
16.
A soluble base with a pH greater than 7 that turns universal indicator blue or purple.
17.
A substance with a pH of exactly 7, like pure water.
18.
A chemical that changes colour to show whether a substance is acidic or alkaline.
19.
The non-contact force that pulls objects toward each other.
20.
A contact force that opposes motion between two surfaces sliding past each other.
21.
The standard unit used to measure force.
22.
The force of gravity acting on an object's mass.
23.
The amount of matter in an object, usually measured in kilograms.
24.
The type of energy stored in moving objects.
25.
Stored energy, such as gravitational or elastic energy.
26.
The transfer of heat energy through a substance without the substance itself moving.
27.
An energy resource that can be replenished and will not run out, like solar or wind.
28.
An idea or explanation that you can test through study and experimentation.
29.
A factor that can be changed, measured, or controlled in a scientific experiment.
30.
A piece of laboratory equipment used to measure temperature.
