Anatomy of Flowering Plants Questions and Answers

Burning of a matchstick is an example of a O physical change O chemical change Oboth physical and chemical changes endothermic change

GradeResulls Question 7 Points 2 Which of the following statements are true with respect to the law of conservation of mass i Mass is conserved during a chemical reaction My Activities Tell me what you want to do Q ii Amount of products formed can be determined using law of conservation of mass iii Mass is destroyed during a chemical reaction Oonly true O Bothi and ii All three statements are true All three statements are false

Points 1 Which of the following is an example of physical change Iron rusts in a damp environment Water is separated into hydrogen and oxygen O Sugar dissolved in water Wood is burnt

Question 5 Points 1 Rust forming on a bicycle left outdoors is an example of a O temporary change physical change chemical change change of state

Question 7 Points 1 Which of the following is a physical change e Melting ice Metal corrosion Burning paper Baking bread

Nitrogen and chlorine are nonmetals Which of the following statement s is are wrong about nitrogen and chlorine 1 They gain electrons 2 They are semiconductors 3 They are electronegative 4 They have high density 5 They have high meting point O 1 2 and 3 O 2 4 and 5

Where are metalloids located in the periodic table O Between metals and nonmetals O Below metals O Above nonmetals O Randomly distributed

following reaction the product formed is Ca H SO4 X H O Cao O Casi03 O CaSO4 O CaCO3 Complete Later Comple

What property is not a characteristic of metals O Brittle O Shiny O Ductile O Malleable

Question 4 Points 3 Metallic bonding is the electromagnetic interaction between protons and electrons inner shell electrons Odelocalized electrons static electrons

Question 3 Generally metals exist in Points 1 Osolid and liquid states 6 solid and gaseous states a solid state only Osolid liquid and gaseous states Complete Later

GradeResults Question 8 12 A compound is said to be ionic if it has an electronegativity difference between its bonding atoms greater than 14 16 Points 1 1 8 My Activities Teine what you want to do Q Reiset buon Questions

Question 4 Identify the chemical formula of sodium iodide O NaCl Po O Nal O Nal2 O Nall

Which of the following pairs of ions would form barium oxide O Ba and O O Ba and 0 O Ba 2 and 0 O Ba and 0

uestion Points 1 What is the mass of one atomic mass unit O 1 67 10 14 g 1 67 10 24 g 1 67 1027 g 1 67 10 2 g

adeResults My Activities Tell me what you want to do Q The molar mass of the compound SF is 108 01 g mol Which of the following is the chemical formula off compound OSF3 OSF2 OSFs 101 Dalmatians City 10k Yellow Gold Me

Question 4 Points 2 How many molecules of dioxane are present in 2 00 x 109 mol of dioxane O 8 02 x 1032 molecules of dioxane O3 32 x 10 5 molecules of dioxane 1 20 x 10 5 molecules of dioxane 3 01 x 1032 molecules of dioxane

My Activities 0 075 mol of tungsten contains how many atoms O 4 5 x 1022 atoms O 4 5 x 1022 atoms O 2 25 x 10 22 atoms O 2 25 x 10 22 atoms Tell me what you want to do

Which of these do not react with acids O Nitrogen O Magnesium Zinc O Iron

lonic bonds are formed by O sharing electrons between two atoms O transferring electrons from one atom to another O electrons of the same element O sharing electron pairs unequally

What prefix is used to indicate 4 in naming molecular compounds O octa O tetra Otri O deca

HCI has a n Oionic bond O metallic bond O polar covalent bond Ohydrogen bond

Which of the following statements are incorrect 1 All matter is composed of compounds 2 Atoms of the same element are identical 3 Atoms join in indefinite ratios 4 Atoms of different element are same 1 2 3 1 3 4 1 284 25

Salt water is a O Brass OAir O solution O Alloy

alleability is an example of O physical property O extensive property O chemical property O atomic property

Grade Results Which of the following is the gradient for the following graph Pressure 1 5 1 3 1 1 09 180 0 9 0 05 atm k O 0 5K 0 7 055 100 140 180 220 260 300 Temperature K 0 005 atm change in x than 0 005 atm K My Activities Tell me what you want to do Q 1260 1 3 change in y e PM FROW Lhamond W 66 101 Dalmatians

Which among the following refers to a class of handheld calculators that are capable of plotting graphs solve simultaneous equations and performing various other tasks with variables O Graphing calculators O Metric ruler O Spring scale

GradeResulls What number of moles of O is needed to produce 75 grams of P4010 from P Molecular weight P4010 284 g mol O 0 26 moles O2 64 moles O 0 5 moles My Activities Tell me what you want to do a O 1 25 moles

Points 1 Question 2 Weight is a force that measures the pull on a given mass by gravity O momentum inertia

Question 10 Points 3 How many meters are there in 2 megameters O 2 106 O 2x10 O 2x10 6 O 2x103

Which of the following statements is false O A clinical thermometer is used to measure the body temperature O A clinical thermometer is used to measure the temperature of the surrounding air O A food thermometer is used to measure the temperature of the food An outdoor thermometer is used to measure the temperature of the surrounding air

Question 2 Points 2 Which of the following pairs of substances conducts electricity Rubber and iron O Iron and salt solution O Sugar and salt solution Wood and sulfur

Points 1 Identify the conductivity of sugar solution Question 6 1000 s cm O 10 s cm O 300 s cm 0 s cm what you want

Points 1 Identify the magnetic material on 8 O Copper O Nickel Silver Gold ties

Points 2 Which of the following changes is observed when sugar is heated in a piece of aluminum foil O Turns light brown and pop O No change O Burns and crackle Burns and chars Activities JozXNO gradelD 230xMXRIc30 Diamond W 101 Dalmatians City Tok Yellow Go Tell me what you want to do Q

Which of the following gases exists as a molecule O Argon O Nitrogen Radon Xenon

Which of the following is NOT a property of a mixture Made of two or more substances Easy to separate O Has a fixed composition it may be homogeneous or heterogeneous

What are the properties of gases O No fixed shape and fixed volume No fixed shape and volume Fixed shape and fixed volume O Fixed shape and no fixed volume

Question Identify the compound H 0 ON ruins 00 Oa H O Complete Later

What term is used to describe a pure substance that can be broken down by means of chemical methods O Matter O Compound Element

is the smallest unit of a compound O Molecule O Atom Element Mixture

gas O liquid O liquid or gas O solid PALEMINDE

Which of the following is the main postulate of the kinetic theory of matter All substances are made up of very tiny particles called atoms O The particles of matter are held together by an electric force of attraction O The space between the gas particles is very large when compared to the size of the gas particles O All of the choices

According to the kinetic molecular theory liquid particles have greater internal energy than gases O less internal energy than solids O greater internal energy than solids O very strong intermolecular forces

Which among the following statement is incorrect with respect to gases OGas particles are freely arranged within the container O Gases are compressible in nature O They don t have definite shape and occupy their container s volume O They don t have a definite mass

According to the kinetic molecular theory O Particles present in matter are in constant rest O Matter possesses definite internal energy O All collisions between particles are inelastic in nature O Matter has no mass but occupy a definite volume

I m a process in which a form of matter with random movement of particles throughout the volume changes to a form of matter with vibrating particles Who am I O Sublimation O Deposition O Condensation O Freezing

Particles in the solid will Orest at all times O vibrate around their fixed point O move around freely Ofly around freely

Which of the following statements is a correct approximation of the kinetic molecular theory O Matter possesses definite amount of kinetic energy due to the constant motion of its particles O All collisions between particles in matter are plastic in nature O There is no chance of collision between particles in matter

Answer the 4 inferential questions below about the following paragraph 4 Amanda would have a fit if John s dusty boots made it so far as the welcome mat so every day after work he took them off on the steps of the front porch His dust covered overalls went into a plastic garbage bag Alice left a new garbage bag tied to the door handle for him every morning He would eat dinner with her after he was presentable as Amanda had often said John just shook his head and complied with her requests He had learned it was easier to take that approach 1 What does John do for a living 2 What personality traits can you infer about Amanda 3 What personality traits can you infer about John