Final test

Question 1

What are the building blocks of all matter?

Answer 1

B. Atoms

Question 2

Which of the following conversion factors would you use to change 18 kilometers to meters?

Answer 2

A. 100m/1km

Question 3

On the celsius scale, at what temperature does water boil?

Answer 3

C. 100 degrees

Question 4

If the relationship between the manipulated variable and the responding variable is a direct proportion what will a line graph of this relationship look like?

Answer 4

A. straight line

Question 5

Which of the following are pure substances?

Answer 5

B. Compounds

Question 6

If a material contains 3 elements joined in a fixed proportion it is a

Answer 6

D. Compound

Question 7

Which of the following is a characteristic of a mixture

Answer 7

A. Has varying properties

Question 8

Which of the following is a heterogeneous mixture?

Answer 8

C. A jar of mixed nuts

Question 9

A mixture can be classified as a solution, suspension, or colloid based on the

Answer 9

B. Size of its largest particles

Question 10

Which of the following has the highest viscosity?

Answer 10

A. Corn Syrup

Question 11

A substance has a melting point of 0ºC and a boiling point of 100ºC. The substance is most likely

Answer 11

A. Water

Question 12

A material that is malleable and conducts electricity is most likely

Answer 12

C. A metal

Question 13

What physical properties of nylon and leather make them good materials to use for shoelaces?

Answer 13

B. Durability and flexibility

Question 14

Which of the following materials is useful for making molds because it has a low melting point?

Answer 14

D. Wax

Question 15

When a physical change in a sample occurs, which of the following does NOT change?

Answer 15

D. Composition

Question 16

Which of the following is NOT a clue that a chemical change has occurred?

Answer 16

D. Change in shape

Question 17

Matter that has a definite volume but no definite shape is a

Answer 17

A. Liquid

Question 18

Forces of attraction limit the motion of particles most in

Answer 18

B. A solid

Question 19

What is the result of a force distributed over an area?

Answer 19

C. Pressure

Question 20

Raising the temperature of a gas will increase its pressure if the volume of the gas

Answer 20

C. and the number of particles are constant

Question 21

The phase change occurs when water changes from a solid to a liquid?

Answer 21

Melting

Question 22

The phase change that is reverse of condensation is

Answer 22

Vaporization

Question 23

Which statement about subatomic particles is true?

Answer 23

D. An electron has far less mass than either a proton or neutron.

Question 24

Which of the following is unique for any given element?

Answer 24

C. Number of protons

Question 25

Suppose an atom has amass number of 35 which statement is true beyond any doubt

Answer 25

D. the number of protons in the nucleus does not equal the number of neutrons.

Question 26

Mendeleev changed the known chemical elements in a table according to the increasing

Answer 26

D. Mass

Question 27

Which general statement does NOT apply to metals?

Answer 27

C. Most Metals are brittle

Question 28

The column on the far left of the periodic table contains the

Answer 28

A. Most Reactive metals

Question 29

Which of the following Group 1A elements is the most reactive?

Answer 29

A. Cs

Question 30

which of the following groups contain three elements with stable electron configurations?

Answer 30

D. Helium, Xenon, neon

Question 31

Study the electron dot diagram for lithium carbon fluoride and neon choose the statement that correctly identifies the most stable of elements

Answer 31

D. Neon is most stable element because its highest occupied energy level is filled.

Question 32

The SI unit of mass is the ____.

Answer 32

Kilogram

Question 33

A measurement Must include but a number and a_____.

Answer 33

Unit

Question 34

Pure substances are either _____ or ____.

Answer 34

Elements; Compounds

Question 35

A material used for electrical wiring would need to have good ____.

Answer 35

Conductivity

Question 36

When water boils from that molecules have enough _____ to overcome the attraction of neighboring molecules

Answer 36

Kinetic energy

Question 37

Water boils when its vapor pressure becomes equal to __ Pressure.

Answer 37

Atmospheric

Question 38

What type of graph would be the best to use to compare the levels of lead contamination in six water wells?

Answer 38

Bar graph

Question 39

Based on the information which substance would be solid at 10.0 C

Answer 39

Acetic acid, and gold

Question 40

It's on the data in figure 2-2 is Mixture C a homogeneous or heterogeneous mixture?

Answer 40

It is heterogeneous because it can be filtrated and scattered by light

Question 41

Which of the mixtures is a colloid?

Answer 41

A. It does scatter light but cannot be separated or filtered

Question 42

Which of the mixtures is a solution

Answer 42

B. It does not scatter light and does not separate

Question 43

rank the mixtures in order of the size of the particles starting with the smallest particles

Answer 43

BAC

Question 44

What period and group is an atom of this element in

Answer 44

Period-3 group-7

Question 45

Find density

Answer 45

Density= Mass/Volume

Question 46

AB+C=AC+B is an example of what type of reaction?

Answer 46

Single deplacement

Question 47

2 H2O= H2+O2 is an example of what type of reaction?

Answer 47

Decomposition

Question 48

A+B=AB is an example of what type of reaction?

Answer 48

Synthesis