How long will it take a coach travelling at

90 km/h to travel 300 km along a highway?

Isotopes exist because atoms of the same element can have different numbers of

What happens to the electron configuration when you move across a period to the right?

Compounds formed when non-metals react with metals consist of particles called ionic compound

In preparing students to write a chemical equation we often use analogies. Let's write an equation for the construction of a car with just 2 door. We'll use doors, body, interior, tires how to write it?

Scientist who have a chemical element named after them

What larger energy does light energy come from?

Allows water to pass through easily

Which is a cause of desertification? A. farming B. creating reservoirs C. overgrazing D. driving motor vehicles

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a

Is chicken noodle soup an element, a compound, a homogeneous mixture, or a heterogeneous mixture?