Put the following metals in order of reactivity.

Iron, potassium, copper, zinc, lead, calcium, magnesium, sodium, gold



Most reactive



















Least reactive



Complete the equations

metal + oxygen → …………………….

metal + water → ……………………. + …………………….

metal + acid → ……………………. + …………………….

What is formed when magnesium burns in air?

…………………….…………………….…………………….…………………….

What happens when copper is put into a beaker of water?

…………………….…………………….…………………….…………………….

How do you test for hydrogen gas?

…………………….…………………….…………………….…………………….

What is formed when sodium reacts with hydrochloric acid?

…………………….…………………….…………………….…………………….

How should metals more reactive than carbon be extracted from their ores?

…………………….…………………….…………………….…………………….

Why is gold used in jewelry?

…………………….…………………….…………………….…………………….

What is the rule for displacement reactions?

…………………….…………………….…………………….…………………….

Tick which reactions would happen



copper

Magnesium

zinc

copper sulfate







Magnesium

sulfate







Zinc Sulfate









Using the reactions from Q10. Choose 1 reaction you’ve ticked and explain why it happens. Choose 1 reaction you haven’t ticked and explain why it doesn’t happen.

…………………….…………………….…………………….…………………….

…………………….…………………….…………………….…………………….

…………………….…………………….…………………….…………………….

…………………….…………………….…………………….…………………….

Write word and symbol equations for the first reaction from Q11.

…………………….…………………….…………………….…………………….

…………………….…………………….…………………….…………………….

Answers

Answer 1

Answer: copper, zinc, lead, magnesium, potassium, sodium, iron, gold.

Explanation:


Related Questions

9. A container has 56 g of Sc and 95 g of Br 2 in it. If the reaction goes to completion, what is the maximum amount of ScBr3 which could be produced?

Answers

Answer:

c

Explanation:

The empirical formula of a compound is determined to be N2O5. If the molar mass of the compound is 108 g/mol, determine the molecular formula of the compound.

Answers

Answer:

N2O5

Explanation:

Empirical formular is the simplest formular of a compound and shows the atoms present in simple rations.

Molecular formular on the other hand shows the exact number of atoms of element present in a compound.

To obtain molecular formular from empirical formular;

(Empirical formular)n = Molar mass

where n is a simple integer.

(N2O5)n = 108 g/mol

Molar mass of N2O5 = 108 g/mol

(108) n = 108

n = 108 / 108 = 1

Molecular formular = (Empirical formular)n

Molecular formular = (N2O5)*1 = N2O5

In this question, the empirical formular is the same as the molecular formular

if you had a block square that weighed 5.00 grams what would be the length of each side

Answers

Answer:

[tex]l = 0.793[/tex] cm

Explanation:

Let us assume the density of block square [tex]10[/tex] g/cm³

As we know

Volume = [tex]\frac{Mass}{Density}[/tex]

Thus Volume of this block is equal to [tex]\frac{5}{10} = 0.5[/tex]

As we know volume of square block of side of length "l" is equal to [tex]l^3[/tex]

[tex]l^3 = 0.5[/tex]

[tex]l = 0.793[/tex] cm

An ionic bond always forms between _____ ion with a positive charge and _____ ion with a negative charge.

Answers

Answer:

Cation and anion

Explanation:

Positive ion is known as cation and negative ion is known as anion

How many liters of water is necessary to make a 1.14 M solution with 5.10 mol KNO3?

Answers

4.47 liters of water.

What kind of information does this map show?
A. The roads that connect different cities
OB. The shapes of different landforms
O C. The elevation of Earth's surface features
D. The natural resources found in different areas

Answers

A the numbers represent highways.
A. This map shows only maps, so only logical one :)

Explain how the temperature of a substance is related to the kinetic of it molecules.

Answers

Answer: this is the explanation

Explanation:

the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles

More kinetic energy means more collision of particles,therefore, as particles collide more the temperature rises.

What group on the periodic table is more reactive 5 or 6 and why?

Answers

Answer:

heheeheheh

Explanation:

Period 5 is more reactive because it is the alkali metals. They have properties and similarities with other alkali metals and other metals.

____ power is generated from the heat released when uranium atoms split in a process known as fission.

Answers

This is definitely nuclear power , I hope it helps u :)

Calculate the mass of hydrochloric acid needed to react with 15.8 moles of zinc.
HCl + Zn -> H2 + ZnCl2

Answers

Answer:

240.1428

Explanation:

I hope this helps! :<


True or false for these!!!! Please help

Answers

False
True
True
False
True
False
Hope this helps!

Heat Shield Rock 5. How did Heat Shield Rock get its name?​

Answers

Answer:

Heat Shield Rock is a basketball-sized iron-nickel meteorite found on the Meridiani Planum plain of Mars by the Mars rover Opportunity in January 2005.

Heat Shield Rock

Which type of mass movement is the most destructive?

creep
erosion
landslide
slump

Answers

Answer:

•landslide

Explanation:

Landslides are exceptionally destructive. Homes may be destroyed as hillsides collapse. Landslides can even bury entire villages. Landslides may create lakes when the rocky material dams a stream.

The type of mass movement is the most destructive landslide.

What is landslide?

Several forms of mass wasting that may include a wide range of ground movements, such as shallow or deep-seated slope failures, rockfalls, mudflows, and debris flows are known as landslips or landslide.

Sometimes more than one type of movement occurs within a single landslide, and analysis of each requires detailed interpretation of landforms and geological sections.

Landslides are exceptionally destructive. Homes may be destroyed as hillsides collapse. Landslides can even bury entire villages. Landslides may create lakes when the rocky material dams a stream.

There are measures that can be taken to reduce the potential for a landslide to occur, such as steep slope reinforcement, installing structures using pile foundations and checking surface drainage. The easiest way to prevent a landslide is to avoid building in areas that are – or might become – prone to landslides.

Given options are-

creep

erosion

landslide

slump

Therefore, The type of mass movement is the most destructive landslide.

To learn more about landslide click:

https://brainly.com/question/13151615

#SPJ7

Which of an atom's electrons are involved in chemical reactions?

ANSWER: D

A. The electrons that make one isotope different from another

B. The electrons closest to the nucleus of the atom

C. The electrons that determine the atomic number of the atom

D. The electrons farthest from the nucleus of the atom​

Answers

it’s C

i hope i help you but if not DO NOT FORGET STAY SAFE AT HOME

Answer:

D.

Explanation:

The electrons farthest from the nucleus of the atom​

which diagram would it be?

Answers

Answer:

2CH4 ------> 3H2 + C2H2

Explanation:

The law of conservation of mass states that atoms can neither be created nor destroyed in a chemical reaction.

The implication of this law is that the number of atoms of each element on the reactant side must be equal to the number of atoms of each element on the product side.

This law is only obeyed by the reaction, 2CH4 ------> 3H2 + C2H2

There were eight atoms of H on the left hand side as well as the right and side of the reaction equation. There were two atoms of C on both the left and right hand sides of the reaction equation respectively. Hence, the law was obeyed here.

Arrange the following atoms in order of increasing size (radius).
Te, S, Se
K, Br, Ni
Ba, Si, F

Answers

Answer:

S<Se<Te

Br<Ni<K

F<Si<Ba

Explanation:

which organs are part of the respiratory system ​

Answers

It includes the lungs, airways, and blood vessels. The muscles that power your lungs are also a part of the respiratory system.

in cubic
A box that is 35 inches X 35 centimeters X 0.065 yards will have a volume of
centimeters.

Answers

Answer:

V = 18,493.5114 cm³

Explanation:

Dimensions are;

L = 35 inches

W = 35 cm

H = 0.065 yards

Now, volume is given by;

V = LWH

But our dimensions need to all be in the same unit, so let's convert to cm.

L = 35 inches = 35 × 2.54 cm = 88.9 cm

H = 0.065 yards = 0.065 × 91.44 = 5.9436 cm

Thus;

V = 88.9 × 35 × 5.9436

V = 18,493.5114 cm³

10
If velocity is positive, which would most likely yield a negative acceleration?
O O OO
A final velocity that is faster than an initial velocity.
A time that is less than a half hour.
An initial velocity that is faster than a final velocity.
A time that is greater than a half hour.

Answers

Answer:

An initial velocity that is faster than a final velocity

Explanation:

The relationship between velocity and acceleration is given as follow;

Acceleration = Change in velocity / Time

Change in Velocity = Final Velocity - Initial Velocity

From the formular, time is not able to affect the sign of the acceleration.

A negative acceleration is also referred to as deceleration and this occurs when there is a drop in velocity.

A drop in velocity occurs when the initial velocity is faster than the final velocity.

Which three elements are combined in lithium sulfate ?

Answers

Answer:

jsidndnxjxixdjdbsjsjdidnsjdjdidndjd

Why would it be harder to jump on the planet Jupiter than on Earth?
HELP PLSSS

Answers

The answer for your question is B!
THE ANSWER IS THE SECOND OPTION

I really am bad at chemistry

Answers

Answer:

A, 4,3,3,4

B, 3,2,2,3

C, 2,6,2,3

D, 1,2,1, 1

How does the rock cycle work help use a easy understanding small summary

Answers

Answer: this is how it works

Explanation:

The magma bursts through Earth's surface in the form of a volcano. Heat and pressure deep in the Earth makes some rocks change to metamorphic rock. Layers of rock get squashed and packed together and gradually harden to form sedimentary rock. The igneous rock gets broken down by weather, and the cycle begins again.

Please help me I hate chemistry

Answers

i’m only here bc i gota ask a question too

disolvin rate is The rate at which a solute dissovles depends upon the size of the solute particles. Dissolving is a surface phenomenon since it depends on solvent molecules colliding with the outer surface of the solute.

saturation the degree or extent to which something is dissolved or absorbed compared with the maximum possible, usually expressed as a percentage.

changes in solubility  For many solids dissolved in liquid water, the solubility increases with temperature. The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.

The concentration of a solution is a measure of the amount of solute that has been dissolved in a given amount of solvent or solution. A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.

dilution is the making something weaker in force, content, or value.

Colligative properties of solutions are properties that depend upon the concentration of solute molecules or ions, but not upon the identity of the solute. Colligative properties include vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure.

plsssss help with this ill give brainliest to first answer
How does the concept of conservation of mass apply to chemical reactions?

Answers

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

If you add more molecules but do not change the temperature or the pressure, what will happen to the system?
the molecules will move faster
O the volume will decrease
the volume will increase
the molecules will move slower

Answers

Answer:

the volume will increase

Explanation:

The kinetic energy of gas molecules depend upon the temperature . If temperature is increased , the molecules will move faster . When temperature is decreased , they move slower .

Hence when more molecules are added to a gas without changing its temperature , the velocity of gas molecules will remain unchanged .

Since pressure  is also constant , it is volume which will be increased .

It can be explained from universal gas formula as follows

PV = nRT

P , R and T is constant ,

V ∝ n

Volume is proportional to n which depends upon number of molecules .

So volume will increase if number of molecules increases .

i really need help on this one!!


Suppose Earth’s gravitational force were decreased by half. How would this change affect a game of basketball? Think about the motion of the players and the ball.

Answers

Answer:

Due to the decrease in the gravitational force, it will take longer time for ball to reach the ground while dribbling. Moreover, the hang time of players will also be longer. This means that the players will stay on air longer and will be able to jump higher.

i am a silvery white metal used to make salt​

Answers

Sodium lol
:.:.:.:.:.:.:

_____ are bits and pieces of material that end up in a body of water.

Answers

Answer:

sediments

Explanation:

what geologic structures are associated with earthquakes

Answers

Answer:

Seismic waves are produced when suddenly released some sort of energy stored in Earth's crust, usually when suddenly fracture and "slip" masses of rock straining against each other. Earthquakes occur most frequently along geological faults, narrow zones where rock masses shift in relation to each other.

Explanation:

Hope This Helped. :)

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If required, round to the nearest cent.Direct materials cost per equivalent unit: $ per ounceConversion costs per equivalent unit: $ per ounceThe costs per equivalent unit of direct materials and conversion in the Filling Department of Eve Cosmetics Company are $2.20 and $0.65, respectively. The equivalent units to be assigned costs are as follows: Equivalent Units Direct Materials ConversionInventory in process, beginning of period 0 3,600 Started and completed during the period 45,000 45,000 Transferred out of Filling (completed) 45,000 48,600 Inventory in process, end of period 3,000 1,500 Total units to be assigned costs 48,000 50,100 The beginning work in process inventory had a cost of $2,380. Determine the cost of completed and transferred-out production and the ending work in process inventory. If required, round to the nearest dollar.Completed and transferred-out production $Inventory in process, ending $ Twenty years ago a small town in Texas had a population of 10,000. 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