Chapter 8

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

In an equation, the symbol for a substance in water solution is followed by

(aq)

Write a balanced chemical equation for the following reaction: iron plus copper (I) nitrate yields iron (II) nitrate plus copper

Fe+2CuNO3>Fe(NO3)2+2Cu

According to the law of conservation of mass. the total mass of the reacting substances is

always equal to the total mass of the products

An element in the activity series can replace any element

below it on the list

When heated a metal carbonate decomposes into a metal oxide and a

carbon dioxide

Predict what happens when zinc is added to water

no reaction occurs

Which reaction does not occur

2 HF (aq) + Cl2 (g)> F2 (g) + 2 HCl (aq)

What is the balance equation when aluminium reacts with copper (II) sulfate

2Al+3CuSO4>Al2 (SO4) 3 + 3Cu

Tell what type of chemical reaction is represented by the following formula equation. Then balance the equation Ga(s) +S(s) >Ga2S3(s)

2Ga(s)+3S(s)> Ga2S3(s) Synthesis

use the activity series to determine if the following reaction is possible, if not explain 2K+ZnCl2>

2K+ZnCl2>Zn+2KCl this is because Zn is higher than K, so it pushes K out

Tell the type of chemical reaction is represented by the following formula equation Li(s) +H2O>LiOH(aq) +H2(g)

2Li(s)+2H2O(l)>2LiOH(aq) +H2(g) Single displacement

In order for the reaction 2Al+6HCl> 2AlCl3+3H2 to occur which of the following must be true

Al msut be above H on the activity series

Tell what type of chemical reaction is represented by the following formula equation. Then balance the equation C3H8(g)+ O2(g)> CO2(g)+ H2O(l)

C3H8(g)+ 5O2(g) >4H2O(l) Combustion

Complete the following equations CH4+O2>CO2+

CH4+2O2>CO2+2H2O

Predict what happens when calcium metal is added to a solution of magnesium chloride

Calcium chloride forms

use the activity series to determine if the following reaction is possible, if not explain Co(s)+Mg(NO3)2>

Co(s)+Mg(NO3)2> No reaction Because neither react with each other

complete and balance the following equation Fe2(SO4)3 +Ba(OH) 2

Fe2(SO4)3+3Ba (OH)2>2Fe(OH)3 +3Ba(SO4)

In writing a chemical equation that produces hydrogen gas, the correct representation of hydrogen gas is

H2

The formulas for the products of the reaction between sodium hydroxide and sulphuric acid are

Na2SO4 and H20

A double replacement reaction takes place when aqueous space Sn(NO3)2. You would expect one of these products of the reaction to be

NaNO3

In the word equation, sodium oxide +water > sodium hydroxide, the formula for sodium hydroxide is represented by

NaOH

What are the correct formulas and coefficents for the products of the following double replacement reaction RbOH+H3 PO4>

Rb3PO4 + 3H2O

The reaction represented by the equation 2Mg(s) +O2(g)> 2MgO (s) is a

Synthesis reaction

In double displacement reactions hydrogen chloride and sodium hydroxide react to produce sodium chloride. Another product is

Water

When a solid produced by a chemical reaction separates from the solution it is called

a precipitate

Which observation does not indicate that a chemical reaction has occurred?

change in total mass of substances

The equation AX>A+X is the general equation for a

decomposition reaction

The reaction represented by the equation 2HgO(s)>2Hg (l) +O2 (g) is

decomposition reaction

The equation AX+BY> AY + BX is the general equation for a

double displacement reaction

Active metals react with certain acids, such as hydrochloric acid, to yield a metal compound and

hydrogen

Group 1 metals react with water to produce metal hydroxides and

hydrogen

If metal X is lower than metal Y in the activity series, then metal X

loses electrons less readily than does metal Y

When a metal chlorate is heated it decomposes to yield a metal chloride and

oxygen

An active metal and a halogen react to form a

salt

When sodium chlorate, NaClO3, decomposes the products are

sodium chloride and oxygen

What kind of reaction do two or more substances combine to form a new compound

synthesis reaction

Many metal hydroxides decompose when heated to yield metal oxide and

water


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