Chemistry Unit1 Flashcards
What are the layers of earth?
the crust, mantle, inner core and outer core
What is the main piece of safety equipment we use in our labs when heating substances?
Goggles
What is an independent variable?
The variable that changes
What is a dependent variable?
The variable that we measure
What is a control variable?
The variable that doesn’t change
What is the pH scale?
A scale to see if a substance is an acid or alkali or neutral, this can also be used for seeing how strong an acid/alkali is
What is an indicator?
Something that indicates if something is an acid or alkali or neutral
What is an acid?
A substance lower than 7 on a pH scale
What colour will an acid be in Universal Indicator?
Red/orange
What do we call substances with pH7?
Neutral
What is a neutralisation reaction?
Turns green with a universal indicator
What type of rock is formed from tiny grains pressed in layers?
Sedimentary
What type of rock is formed from cooled lava or magma?
Igneous
Which type of rock is likely to have fossils?
Sedimentary
What is weathering?
When something changes due to the temperature
