Free Printable FINAL EXAM

1.

The positively charged particle in the nucleus of an atom is a:

a)

Proton

b)

Neutron

c)

Electron

d)

Shell

2.

The neutral particle in the nucleus of an atom is a:

a)

Proton

b)

Neutron

c)

Electron

d)

Shell

3.

A tiny, negatively charged particle that moves around the nucleus of an atom in clouds/shells is called:

a)

An electron

b)

A proton

c)

A neutron

d)

A shell

4.

The number of protons in the nucleus of an atom is equal to the:

a)

Atomic number

b)

Atomic mass

c)

Number of neutrons

d)

Number of valence electrons

5.

the starting materials in a chemical reaction

a)

Products

b)

Reactants

c)

Starters

d)

Enders

6.

a substance formed when two or more elements are chemically bonded together

a)

Element Soup

b)

Pure Element

c)

Ion

d)

Compound

7.

type of reaction in which two or more elements combine to form a more complex compound

a)

Double Displacement

b)

Single Displacement

c)

Synthesis

d)

Decomposition

8.

type of reaction in which a compound is broken down into its simple elements

a)

Double Displacement

b)

Single Displacement

c)

Synthesis

d)

Decomposition

9.

Without balancing the final equation, predict the products for the synthesis reaction: $Li\ +\ Cl_2\ \rightarrow$ ?

a)

$LiCl_2$

b)

$LiCl_{ }$

c)

$Li_2Cl_2$

d)

$Li_2Cl_{ }$

10.

Without balancing the final equation, predict the products for the synthesis reaction: $Mg\ +\ Br_2\ \rightarrow$ ?

a)

$MgBr$

b)

$MgBr_2$

c)

$Mg_2Br$

d)

$Mg_2Br_2$

11.

Without balancing the final equation, predict the products for $Al\ +\ Cl_{2\ }\rightarrow\ ?$

a)

$Al_3Cl$

b)

$AlCl$

c)

$AlCl_3$

d)

$Al_3Cl_2$

12.

Without balancing the final equation, predict the products for the synthesis reaction: $Al\ +\ S_8\ \rightarrow\ ?$

a)

$AlS_8$

b)

$Al_3S_2$

c)

$Al_3S_8$

d)

$Al_2S_3$

13.

What is the final balanced equation for: $Na\ +\ Br_2\ \rightarrow\ ?$

a)

$Na\ +\ Br_2\ \rightarrow\ NaBr_2$

b)

$2\ Na\ +\ Br_2\ \rightarrow\ 2\ NaBr$

c)

$Na\ +\ Br_2\ \rightarrow\ 2\ NaBr$

d)

$4\ Na\ +\ Br_2\ \rightarrow\ 2\ Na_2Br$

14.

______________ (+ heat) → zinc oxide + carbon dioxide

a)

zinc carbonate

b)

zinc oxide

c)

zinc dioxide

d)

zinc hydrogen carbonate

15.

Oxides:

$FeO\rightarrow$

a)

$2FeO\ \rightarrow\ O_{2\ }+\ 2Fe$

b)

$FeO\rightarrow\ O\ +\ Fe$

c)

$2FeO\ \rightarrow\ O_2\ +\ Fe_2$

16.

A decomposition reaction can be recognized because it has...

a)

only one product

b)

only one reactant

c)

2 or more reactants and 2 or more products

d)

the presence of a catalyst

17.

A chemical change in which two substances react to form a new substance is a ____________________________.

a)

decomposition reaction

b)

Combination reaction

c)

precipitation reaction

d)

combustion reaction

18.

What are the seven diatomic elements?

a)

H_2,Cl₂, Br₂, O₂, N₂, I₂, F₂

b)

H₂, Cl₂, I₂, F₂, Hg₂, Br₂, Fe₂

c)

H_2,Cu₂, Ni₂, B₂, O₂, I₂, Fe₂

19.

What are diatomic elements?

a)

Elements that form two-atom molecules when not combined in a compound.

b)

Two elements that combine with one atom from each element.

c)

Elements that are always in pairs no matter what.

20.

What is the role of protein in the body?

a)

Is the main source of energy for the body

b)

Helps to build and repair body tissue

c)

Provide warmth and cushioning to the body's organs

d)

Helps to transport vitamins through the body

e)

All of the above are roles of protein in the body

21.

What is a type of protein that speeds up chemical reactions?

a)

sucrose

b)

insulin

c)

enzyme

d)

antibodies

22.

What are the bonds that connect amino acids in a protein called?

a)

peptide bonds

b)

ester bonds

c)

glycosidic bonds

d)

phosphodiester bonds

23.

What is the monomer of carbohydrates

a)

disaccharides

b)

monosaccharides

c)

amino acids

d)

fatty acids

24.

Which polysaccharide is used by plants to store glucose?

a)

glycogen

b)

cellulose

c)

starch

d)

chitin

25.

Which polysaccharide makes up the exoskeleton of insects?

a)

cellulose

b)

starch

c)

chitin

d)

glycogen

26.

What's the monomer of a nucleic acid?

a)

DNA

b)

monosaccharides

c)

nucleotide

d)

amino acid

27.

What is the function of nucleic acids?

a)

store energy (long-term)

b)

store energy (short-term)

c)

build skin, hair, nails, muscles

d)

store genetic information

28.

What are the components of a nucleotide?

a)

nitrogen base, phosphate group, and pentose sugar

b)

pentose sugar, purine, and pyrimidine

c)

nitrogen base and a phosphate group

d)

DNA, phosphate group, monosaccharide

29.

What is the difference between DNA and RNA from the point of view of the nitrogenous bases that are present in their nucleotides?

a)

In DNA, nucleotides can be made up of A, T, C, G. In RNA, nucleotides can also contain A, C or G; however, instead of T, they contain U.

b)

Purine and Pyrimidine

c)

Pyrimidine: Thymine, Cytosine (Urical)

d)

DNA, RNA

30.

The two strands making up the DNA double helix molecule

a)

contain ribose and deoxyribose in opposite strands.

b)

are held together by hydrogen bonds.

c)

are attached through a phosphate to hold the strands together.

d)

contain uracil but not thymine.

31.

Guanine is complementary to what other nitrogenous base?

a)

Cytosine

b)

Adenine

c)

Thymine

d)

Uracil

32.

What is a codon?

a)

a protein that combine with DNA molecules to form nucleosomes

b)

a determinant of characteristics in living organisms

c)

made up of three nitrogenous bases that codes for an amino acid

33.

Which of these are examples of Lipids?

a)

simple sugars

b)

complex carbohydrates

c)

fats, oils, & waxes

d)

hair, skin, & nails

34.

Which carbohydrate is known as table sugar?

a)

Lactose

b)

Maltose

c)

Glucose

d)

Sucrose

35.

Which monosaccharides are found in sucrose?

a)

Glucose and maltose

b)

Glucose and galactose

c)

Fructose and galactose

d)

Glucose and fructose

36.

A pure substance that cannot be broken down into simpler substances.

a)

element

b)

compound

c)

molecule

d)

carbon dioxide

37.

How many elements are in COSNaPMnMg?

a)

10

b)

7

c)

8

d)

9

38.

What is the symbol of the element Mercury?

a)

Hg

b)

M

c)

E

d)

My

39.

What is the symbol of the element Cobalt?

a)

Cb

b)

Ca

c)

Co

d)

Ct

40.

What is the symbol of the element Lead?

a)

L

b)

Le

c)

Ld

d)

Pb

FINAL EXAM - SCIENCE 10

Total questions: 40

Worksheet time: 24mins

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