Revision English Prep 1 Second Term Part2

Which of the following is a unit of weight?

Which of the following is a unit of mass?

Which of the following statements best describes the way in which mass is conserved during chemical reactions?

A teacher places a cup of coffee onto an electronic balance at the front of the science laboratory. The teacher then adds three large teaspoons of sugar to the coffee. The volume of the coffee does not appear to increase. What happens to the mass displayed on the front of the balance?

In a chemical reaction, 64 g of zinc is reacted with excess oxygen to form 80 g of zinc oxide. How much oxygen is used in this reaction?

The greater the mass of an object, the……….. the weight of the object

A process in which breaking of bonds between reactants’ molecules and forming of new bonds between products’ molecules occurs

Which of the following equations showing the formation of carbon dioxide is correctly balanced?

The chemical reaction causes ………

The sum of reactants masses in any chemical reaction is ………. the sum of products masses

If the molecule of carbon dioxide consists of one atom of carbon and two atoms of oxygen, knowing that the mass of carbon is 12 and that of oxygen is 16, so the mass of two molecules of carbon dioxide equals ………. gm

Direct combination reaction takes place between ………..

Ammonia combines with conc. HCl producing ………… of ammonium chloride

Chemical reactions are used in…………

Increasing the ratio of.,………. gas in the atmosphere leads to increasing the air temperature

The gases that cause building corrosion are…………

The gases that affect the nervous system and the eye are……….

All of these gases are acidic gases except…………

………… oxides are resulted during the time of lightning

The substances resulted from burning of coal and cellulose fibres cause ………..

………… is the distance at which an object moves away from its original position at any moment in a certain direction

Which of the following represents a static object ?

The change in an object’s position or direction as the time passes relative to a frame of reference is called…………… motion

If you are in a moving train, you imagine that cars moving in the same direction on the road at smaller speed ………….

The motion of the following objects are transitional motion except the motion of ……..

In the periodic motion, the …………..

All of the following are periodic motions except the ………… motion

All of the following are motions regularly repeated in equal periods of time except …………

All of the following are properties of sound waves except ………….

………… Waves is an example of mechanical waves

………….. are used in examining and curing sets for human body

Sound waves are used in all the following except ……………..

…………… are used in night vision apparatus

X-rays are used in……….

………… are used in medical purposes as the treatment and discovering some swellings

……….. is among the applications of ultraviolet rays

Visible light is used in all of the following applications except in…….