Chapter 1-7

Question 0

First stop in the scientific method is usually

Answer 0

Making an observation

Question 1

Technology can Best be defined as

Answer 1

Applied science

Question 2

Scientific methods

Answer 2

Are a general description of scientific thinking, are used to find and evaluate possible answers to problem, and use critical thinking to solve scientific problems

Question 3

Which unit is used to measure the height of a bookcase

Answer 3

Meter

Question 4

Unit is used to measure the mass of a computer

Answer 4

Kilograms

Question 5

After Formulating a question, the next step of the scientific method is

Answer 5

Research and collect data

Question 6

Which Graph best shows a change and data over time

Answer 6

Line graph

Question 7

What type of graph best shows of comparison of several items or events

Answer 7

Bar graph

Question 8

What type of graph best shows data better part of a whole

Answer 8

Pie chart

Question 9

Which of the following is equal to 5,800,000,000 cm

Answer 9

5.8×10 to the power of 9 cm

Question 10

How many significant figures are in 7.357

Answer 10

Four

Question 11

Which of the following shows 0.0000043 g.

Answer 11

Are 4.3x10 to the power of negative 6 g

Question 12

Maria is 123 cm tall. her height in meters is

Answer 12

1.23 m

Question 13

Which SI prefix means one one hundredth

Answer 13

Centi-

Question 14

A loaf of bread weighs 1362 grams the weight in kilograms is

Answer 14

1.362 KG

Question 15

SI unit for measuring temperature is

Answer 15

Kelvin

Question 16

The chemical formula for water ,H2O, means that each water molecule contains

Answer 16

Two hydrogen Atoms and one

oxygen atom

Question 17

Which of the following is not a potential sign of a chemical change

Answer 17

Evaporation of water

Question 18

The smallest unit of an element that maintains the properties of an element is a(n)

Answer 18

Atom

Question 19

How many Atoms are in a single molecule of Fe2O3

Answer 19

Five

Question 20

A chemical change occurs whenever

Answer 20

New substances form

Question 21

Matter is defined as anything that

Answer 21

Has mass and takes up space

Question 22

Which of the following is not an example of physical property

Answer 22

Reactivity

Question 23

Disgusting food is an example of

Answer 23

Chemical change

Question 24

Substances that cannot be broken down into simpler substances is an

Answer 24

Element

Question 25

Which of the following is an example of physical change

Answer 25

Dissolving salt in water

Question 26

Temperature is a measure of the average ________energy of the particles in The object

Answer 26

Kinetic

Question 27

The heavy a particle the ________ it moves

Answer 27

Slower

Question 28

The resistance of a fluid to flow is referred to

Answer 28

ViSCOSIty

Question 29

Which state of matter will hold it's shape without a container

Answer 29

Solid

Question 30

The change of a substance from a solid directly to a gas is called

Answer 30

Sublimation

Question 31

Evaporation refers to the change of state from a

Answer 31

Liquid to a gas

Question 32

The law of conservation of mass states that mass cannot be

Answer 32

Created or destroyed

Question 33

Ice floats in water because it is

Answer 33

Less dense than water

Question 34

Boyle's Law relates the pressure of a gas to its

Answer 34

Volume

Question 35

Buoyant Force is the _____ force exerted on an object immersed or floating on a liquid

Answer 35

Upward

Question 36

According to the kinetic theory of matter which of the following statements is true about matter

Answer 36

The Adams in molecules of a substance are always in motion The higher the temperature of a substance the best of the particles move more massive particles move more slowly than less massive

Question 37

Unlike a gas a plasma

Answer 37

Conducts electric currents

Question 38

Atoms have no electric charge because they

Answer 38

Have an equal number of electrons and protons

Question 39

Violence electrons determine and Atom's

Answer 39

Chemical properties

Question 40

A subatomic particle that has negative charge is an

Answer 40

Electron

Question 41

What is an Atom's nucleus made of

Answer 41

Protons and neutrons

Question 42

Iron Atom has an atomic mass of 56 it's atomic number is 26 how many neutrons does the iron Atom have

Answer 42

30

Question 43

An element atomic number is equal to its number of

Answer 43

Protons

Question 44

Two different isotopes of an element have different

Answer 44

Numbers of neutrons

Question 45

A sodium Atom which has 11 electrons has_______ electrons in its third energy level

Answer 45

One

Question 46

Oxygen's atomic number is eight that means an oxygen Atom has

Answer 46

Eight protons in it's nucleus

Question 47

The order of elements in the periodic table is based on

Answer 47

The electric charge of the nucleus

Question 48

Atoms of elements that are in the same group have the same number of

Answer 48

Valence electrons

Question 49

Carbon and other nonmetals are found in which area of the periodic table

Answer 49

On the right side

Question 50

As you move from left to right across the periodic table elements

Answer 50

Become less metallic

Question 51

What is Mendeleev is known for

Answer 51

Publishing the first periodic table

Question 52

Adams that Gain or lose electrons are called

Answer 52

Ions

Question 53

Ionization refers to the process of

Answer 53

Losing or gaining electrons

Question 54

Metals tend to be

Answer 54

Good conductors of heat

Question 55

Which is not a family of the periodic table

Answer 55

An outermost energy level that is full of electrons

Question 56

Bonds that holds Atoms together behave most like

Answer 56

Flexible springs

Question 57

An ionic bond is a bond that forms between

Answer 57

Ions with opposite charges

Question 58

In which type of bonding atoms share electrons

Answer 58

Covalent bonds

Question 59

Nickel combines with fluorine to form nickel (3) fluoride the charge of the nickel ion is

Answer 59

N3+

Question 60

A Carbon Atom can bond with four other added because it has

Answer 60

Four valence electrons

Question 61

Which compounds have Carbon carbon double bonds

Answer 61

Alkenes

Question 62

Which of the following models can be used to compare the sizes of Atoms in a molecule

Answer 62

Space-filling

Question 63

An ionic compound of calcium and chlorine would be named

Answer 63

Calcium chloride

Question 64

Will be in on time Panamint of one sulfur and two oxygen Atoms would be named

Answer 64

Sulfur dioxide

Question 65

All organic compounds must contain the element

Answer 65

Carbon

Question 66

Ethene differs from ethane in that is has a

Answer 66

Double bond

Question 67

Alcohol must contain an

Answer 67

-OH Group

Question 68

Covalent bonds are formed between

Answer 68

Nonmetal Atoms

Question 69

All of the following factors may speed up a chemical reaction except

Answer 69

Smaller surface area

Question 70

A substance that is formed in a chemical reaction is called the

Answer 70

Product

Question 71

The following occurs in a endothermic action but not in a exothermic action

Answer 71

Energy is absorbed

Question 72

A type of reaction the products an increase in temperature is

Answer 72

Exothermic

Question 73

In a balanced chemical equation the mass of the week reactants is equal to the

Answer 73

Mass of the products

Question 74

What coefficient is missing in C2H4 +(?)O2-->2CO2 + 2H20

Answer 74

3

Question 75

Which of the following represents a double displacement reaction between sodium chloride and so silver fluoride

Answer 75

NaCl+AgF-->NaF+AgCl

Question 76

As synthesis reaction between magnesium(Mg) and oxygen(O2) may produce

Answer 76

MgO

Question 77

A substance that undergoes a change in a chemical reaction is

Answer 77

A reactant