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- The amount of gravitational potential energy an object stores depends on: the mass of the object the height above the Earth’s surface the gravitational field strength These rocks store gravitational potential energy because of their height above the ground
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The independent variable is the height of the drop. The dependent variable is how high the ball bounces. Control variables include the type of ball, the surface that it is dropped onto and...
- Key points. atom The smallest particle of an element. We often think of atoms as tiny spheres, but in fact they are made from smaller particles called protons, neutrons and electrons.
- Atoms. Atoms are the building blocks of all matter. Everything is made of atoms - even yourself. Atoms are the smallest particle of an element A pure substance which is made from only one type of atom.
- Molecules. Molecules are made when two or more atoms chemically bond together. Atoms from different elements can combine. When the atoms are from different elements, the molecule can also be called a compound.
- Drawing atoms and molecules. Atoms can be drawn as circles. But all the atoms of an element need to look exactly the same. When drawing a diagram of molecules made from the atoms of more than one element, different sizes and colours can show the different elements.
Why is chemistry important? Chemistry is used all around us. Doctors use chemistry to make medicine that helps us when we are sick. Engineers use chemistry to make electronics like your TV and your cell phone. Farmers use chemistry to help their crops to grow so we can have food. Even chefs use chemistry to cook delicious meals.
Gravitational potential energy is the type of energy an object stores due to its height above the ground.
Sep 26, 2019 · Demonstrations that wow kids establish that you are a successful learner of chemistry, but they do little to increase your audience’s experience learning chemistry. Hands-on activities, where kids explore and make discoveries with your guidance, build their self-efficacy as learners of chemistry.
Jun 4, 2022 · Physical Properties. Physical properties of a substance can be quantified without affecting its chemical composition. These characteristics can be used to define a substance’s appearance and size. Different types of matters can also be investigated and compared using physical properties.
Well... Here's our best definition: Chemistry is the study of matter and the changes that take place with that matter. Chemistry looks at the ways matter changes and transforms to create the Universe that you know. Don't ask us why that matters. It just does. It matters a lot.
