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SCIENCE 7 AARON - INVENTORY EXAM 23-24

Total questions: 91

Worksheet time: 45mins

Name
Class
Date
1.

It is a simple statement that presents the possible solution to the problem.

a)

hypothesis

b)

experiment

c)

conclusion

d)

variables

2.

It is also called as the constant variables, in which the variables are kept constant.

a)

Independent variables

b)

controlled variables

c)

dependent variables

d)

variables

3.

It is a forecast of future events based on past observation. And sometimes interchangeable to hypothesis.

a)

hypothesis

b)

fair testing

c)

prediction

d)

experiment

4.

Anything that can change in an experiment is called a ________.

a)

measurement

b)

variable

c)

obeservation

d)

hypothesis

5.

In the set experiment about "does the fertilizer affect the growth of plants", the amount of fertilzer is what kind of variable?

a)

independent variable

b)

dependent variable

c)

controlled variable

6.

It is the fifth step in scientific method, that states the summary of the results of the experiment and here is the statement of how the results match up to the hypothesis.

a)

Reporting findings

b)

Analyzing data and Presenting Data

c)

Creating a conclusion

7.

It is an orderly process of empirical investigation that is focused on solving a problem.

(a)  

8.

What type of mixture is a solution?

a)

Homogeneous

b)

Heterogeneous

c)

Immiscible

d)

Saturated

9.

The substance being dissolved in a solution is called the _________.

a)

Solvent

b)

Solute

c)

Solid

d)

Solvute

10.

The universal solvent is ________.

a)

sodium

b)

acid

c)

salt

d)

water

11.

In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

a)

stir the powder in the liquid

b)

add more powder to the liquid

c)

freeze the mixture

d)

store the mixture in a dark place

12.

Powdered juice, sugar, and water. Which is the solvent?

a)

powdered juice

b)

sugar

c)

water

d)

powdered juice and sugar

13.

In this mixture, which of the following will be the solute?

a)

The water in the glass.

b)

The solution containing both powder and water.

c)

The glass that holds the mixture.

d)

The powder on the spoon.

14.

You were given a 40 mL solution in a beaker. You added solute to the beaker and you observed some particles did not dissolve. What solution is it?

a)

Saturated

b)

Unsaturated

c)

Concentrated

d)

Supersaturated

15.

What do you call a solution that contains the maximum amount of solute dissolved by a given amount of solvent?

a)

Dilute solution

b)

Concentrated solution

c)

Saturated solution

d)

Unsaturated solution

16.

Which of the following refers to the solution that contains less solute than can dissolve at a given temperature?

a)

Dilute solution

b)

Concentrated solution

c)

Saturated solution

d)

Unsaturated solution

17.

An unsaturated solution contains less solute than required.

a)

True

b)

False

18.

What do you called a group of molecules are mixed and evenly distributed in a system and appears as one composition but composed of two substances?

a)

Solution

b)

Solute

c)

Solvent

d)

Mixtures

19.

The following are properties of solution except one.

a)

Particles are not visible to the unaided eye.

b)

Particles cannot be filtered.

c)

It is a one-phased system.

d)

Particles scatter light.

20.

Give one reason why people stir coffee or juice in water after they have added sugar?

a)

Stirring will make the solution sweeter.

b)

Stirring will help sugar mix evenly in

water.

c)

Stirring will make the taste of the

solution good.

d)

Stirring will allow faster spreading of

solute particles in the solvent.

21.

How do you classify alloy as a substance?

a)

Solid Solution

b)

Manufactured Solution

c)

Homogenous Mixture

d)

All of the given choices

22.

A solution is made by mixing coffee and sugar in a cup of hot water. Which of the following is the solvent in the solution?

a)

coffee

b)

hot water

c)

sugar

d)

cup

23.
A solution that can hold more solute  is called
a)
saturated
b)
supersaturated
c)
unsaturated
d)
insoluble
24.

When no more solute dissolves the solution is _________

a)

supersaturated

b)

unsaturated

c)

saturated

d)

supercalifragilisticexpialidocious

25.

The substance being dissolved is called the ________

a)

solvent

b)

solid

c)

solute

d)

solvate

26.
If an electrical current can run through a solution, it is said to contain
a)
magic
b)
nonelectrolytes
c)
electricity
d)
electrolytes
27.
A solution that has more solute than it can hold is called
a)
saturated
b)
supersaturated
c)
unsaturated 
d)
suspension
28.
Contains the maximum amount of dissolved solute
a)
unsaturated solution
b)
supersaturated solution
c)
saturated solution
29.
Which technique could increase or speed up the rate of dissolving?
a)
Allowing the mixture to settle
b)
Stirring the mixture
c)
Adding more powder
d)
Adding more water
30.
How does a solution become supersaturated?
a)
dissolve lots of solute in it.
b)
dissolve a little solute in it. 
c)
dissolve more solute than you should be able to. 
d)
dissolve a super amount of solvent in it. 
31.

A student is preparing solutions for a laboratory experiment by dissolving solid solutes in liquid solvents. Which action will increase the rate of solubility

a)

lowering the temperature of the solvent

b)

stirring the solute in the solution

c)

increasing the pressure on the solution

d)

increasing the particle size of the solute

32.

What is the percent by mass of a sugar solution where 10 grams of sugar is added to 100 grams of water?

a)

.10%

b)

0.091%

c)

9.1%

33.

What element is present in this necklace?

a)

A. Iron

b)

B. Neon

c)

C. Gold

34.

What element is this tray made of?

a)

Aluminum

b)

Silver

c)

Nickel

35.

What are the two elements present in water?

a)

Hydrogen and nitrogen

b)

Hydrogen and oxygen

c)

Oxygen and Nitrogen

36.

What element is this wire made of?

a)

Copper

b)

Gold

c)

Silver

37.

What element is present in this?

a)

Platinum

b)

Iron

c)

Germanium

38.

What is the red liquid that rise when you get your temperature?

a)

Sulfur

b)

Lithium

c)

Mercury

39.

What element is the diamond made of?

a)

Oxygen

b)

Carbon

c)

Nitrogen

40.

What element is present in this can?

a)

Titanium

b)

Boron

c)

Tin

41.

What element is present in the match stick?

a)

Potassium

b)

Phosphorus

c)

Chlorine

42.

What is the symbol of iron?

a)

Fe

b)

FE

c)

I

d)

Ir

43.

The symbol for Potassium is

a)

P

b)

K

c)

Po

d)

Ka

44.

(a)   is the symbol for Gold.

45.

Silver derived its symbol from the Latin word (a)   .

46.

(a)   is used to conduct heat in a thermometer.

47.

What is the symbol for the element which is considered as fool's gold?

a)

Co

b)

Ca

c)

C

d)

Cu

48.

What is the lightest element?

a)

Helium

b)

Neon

c)

Oxygen

d)

Hydrogen

49.

What is the symbol of the element which is considered as the wonder metal?

a)

Cu

b)

Ni

c)

Fe

d)

Al

50.

The complete list of the names of the elements together with their symbols and other characteristics is found in the (a)   .

51.

Which among the following is not a metallic element?

a)

gold

b)

silver

c)

mercury

d)

carbon

52.

What is Kr?

a)

Potassium

b)

Krypton

c)

Chlorine

d)

Krapti.

53.

Atomic number of Ga?

a)

31

b)

12

c)

4

d)

45

54.

30-29= what element?

a)

Lawrence

b)

Lead

c)

Hydrogen

d)

Mercury

55.

3rd element?

a)

Potassium

b)

Arsenic

c)

Xenon

d)

Lithium

56.

How many periods or rows on the periodic table?

a)

5

b)

8

c)

7

d)

9

57.

Who invented the periodic table?

a)

Dmitri Mendeleev

b)

Rosa Parks

c)

Thomas Edison

d)

Albert Ghisoro

58.

Which element has the highest electronegativity

a)

Flourine

b)

Copper

c)

Nitrogen

d)

Silver

59.

Positive partical?

a)

Neutrons

b)

Electrons

c)

Protons

d)

Pizza

60.
In the modern periodic table elements are arranged by:
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
61.

Most of the mass of an atom is found it its?

a)
electron cloud
b)
nucleus
c)
atomic number
d)

house

62.

The Modern Periodic Table of Elements is arranged by

a)

atomic mass

b)

atomic number

c)

valence electrons

d)

number of isotopes

63.
The number at the top of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
Chemical Symbol
d)
Element Name
64.

In each square of the periodic table, the number at the bottom is the:

a)

atomic number

b)

atomic mass

c)

chemical symbol

d)

element name

65.
Most of the elements on the periodic table are classified as _____.
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Periods
66.

The horizontal rows on the periodic table are called

a)

groups

b)

families

c)

periods

d)

atomic numbers

67.

On the periodic table, elements on the right side of the "stair-step" line are classified as:

a)

nonmetals

b)

metals

c)

gases

d)

Halogens

68.

These elements located on the "stair-step" line are sometimes called "semiconductors."

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Groups

69.
Beryllium is in group number______.
a)
Group 2
b)
Group 3
c)
Group 4
d)
Group 7
70.
Which elements have the most similar chemical properties?
a)
K and Na
b)
K and Ca
c)
K and Cl
d)
K and S
71.
Sodium (Na) is found in period 
a)
3
b)
2
c)
4
d)
1
72.
Sodium (Na) is found in group 
a)
1
b)
2
c)
3
d)
4
73.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
74.
What does 12.011 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
75.
What element is will have the most similar physical and chemical properties to the element Nitrogen (N)?
a)
Phosphorous (P)
b)
Carbon (C)
c)
Oxygen (O)
d)
Sulfur (S)
76.
The period for Bromine is ___________.
a)
3
b)
2
c)
4
77.
Name group 1A on the periodic table.
a)
alkali metals
b)
alkaline earth metals
c)
noble gases
noble gases
d)
halogens
78.
Name group 8A on the periodic table.
a)
alkali metals
b)
alkaline earth metals
c)
transition metals
d)
noble gases
79.
Name groups 3B - 12B on the periodic table.
a)
noble gases
b)
halogens
c)
metalloids
d)
transition metals
80.
Name group 7A on the periodic table.
a)
transition metals
b)
metalloids
c)
halogens
d)
alkali metals
81.

Halogens (Group 17)

a)

gas at room temperature, low boiling point.

b)

most reactive nonmetals

c)

The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds

d)

Number of protons and neutrons

82.
A collection of cells with similar functions form ____
a)
an organ
b)
a tissue
c)
an organism
d)
an organ system
83.
What is considered to be the lowest level of organization in a multicellular organism?
a)
cell
b)
organ system
c)
tissue
d)
organ
84.
The smallest units of life that make up all living things are ____
a)
tissues
b)
cells
c)
organs
d)
organ systems
85.
The stomach, small intestines, and large intestine are all organs.  When they work together to process food, they form a functional unit known as _____
a)

an organism

b)
an organ system
c)
a tissue
d)
a cell
86.
Which of the following correctly orders the organization in plants and animals from least to complex?
a)
Cell --> Organ --> Tissue --> Organ System --> Organism
b)
Atom --> Cell --> Organ --> Tissue --> Organism
c)
Cell --> Tissue --> Organ --> Organ System --> Organism
d)
Organism --> Organ System --> Organ --> Tissue --> Cell
87.
Tissues working together to perform specialized functions are called ___
a)
an organ
b)
an organism
c)
a population
d)
a cell
88.
In the sequence from simplest to most complex level of organization, which level is one level more complex than cells?
a)
Cells
b)
Tissues
c)
Organ Systems
d)
Organisms
89.
Lungs, Diaphragm, Brain, Ribs, Skulls, and Heart are all examples of ____
a)
Cells
b)
Organs
c)
Tissues
d)
Organ Systems
90.
The respiratory system is made up of the airways, lungs, and respiratory muscles. The lungs are classified as ______
a)
cells
b)
tissues
c)
organs
d)
organisms
91.
Hepatocytes are the main type of cells in the liver.  Hepatocytes combine to form the next more complex level of organization, called _____
a)
an organ
b)
a tissue
c)
an organism
d)
an organ system

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