Science (Double Award) Unit 2 - Chemistry 1 Foundation Tier

Chemistry exam flashcards

The compound that contains the elements hydrogen and bromine is __.

HBr

The elements present in ethane are and .

Carbon and Hydrogen

The total number of atoms found in a molecule of nitrogen dioxide is __.

3

The formula of formic acid is __.

H2CO2

The formulae of the ions present in lithium chloride are and .

Li+ and Cl-

The formula of magnesium bromide is __.

MgBr2

Wegener suggested the continents were originally arranged such that __.

All of the continents were once joined

Three pieces of evidence that Wegener used to support his theory were __, __ and __.

There are similar animals on different continents, There are similar fossils on different continents, There are similar rocks on different continents

It is now known that the continents moved because of __ currents in the Earth’s mantle.

Convection

The gas which is mainly responsible for the temperature increase in the Earth's atmosphere is __.

Carbon Dioxide

The balanced equation for the reaction of potassium nitrate decomposing is __.

2KNO3 -> 2KNO2 + O2

Marble chips are made of __.

Calcium Carbonate

The time taken for the reaction between marble chips and hydrochloric acid to finish is __.

6 minutes

The graph that shows the reaction for the experiment carried out at a temperature of 40°C is __.

Graph B

At a higher temperature, the particles will have energy, so they will move faster and there will be number of successful collisions per second.

More, a greater

The area in England with the lowest mean DMFT is __.

The South East

Element B is found in __ of the Periodic Table.

Group 0

The formula for potassium oxide is __.

K2O

The process of getting freshwater from seawater is known as __.

Desalination

The formula of sodium carbonate is __.

Na2CO3