Question 1

What do you call an idea or explanation that you test rough study and experimenation?

Accepted Answer

hypothesis

Answer

conclusion

Answer

data

Answer

results

Question 2

Anything that occupies space, has mass weight and volume is known as.

Accepted Answer

matter

Answer

biology

Answer

science

Answer

compound

Question 3

Why a solution is considered a homogeneous mixture?

Accepted Answer

Its components are distributed evenly.

Answer

It contains a solute and solvent

Answer

It can be dilute or concentrated

Question 4

Which is an example of a solution?

Accepted Answer

sea water

Answer

blood

Answer

flour

Question 5

The two components of a solution are solute and solvent. Which statement describes the solute?

Accepted Answer

It is the component of a solution in smaller quantity.

Answer

It is the component of a solution in bigger quantity.

Answer

It is the liquid component of the solution.

Question 6

Which of the following statements is TRUE about elements and compounds?

Accepted Answer

They are homegeneous in nature

Answer

They are the simplest form of matter

Answer

They can be broken down into simpler substances

Question 7

Which of the following statements distinguishes pure substances from mixtures?

Accepted Answer

Have constant boiling temperature and melting temperature.

Answer

Can be separated by physical means.

Answer

Consists of two of more kinds of matter.

Question 8

Mixtures can be separated by physical methods while pure substances cannot be separated. Which of the following groups contain only pure substances?

Accepted Answer

Gold, copper, oxygen

Answer

Ammonia, vinegar, silicon

Answer

Carbon dioxide, air, water

Question 9

Most solids dissolved faster in a liquid, when the liquid is…

Accepted Answer

hot

Answer

cold

Answer

low temperature

Question 10

Elements that are in the same column are called a…

Accepted Answer

family

Answer

period

Answer

group member

Question 11

Have no uniform appearance instead they have two or more phases of matter.

Accepted Answer

heterogeneous

Answer

homogeneneous

Answer

solutions

Question 12

Why do you think that the sand in the beach don't dissolve in water?

Accepted Answer

because the sand is insoluble with water

Answer

because the sand is soluble with water

Answer

because the sand is hard and the water is not

Question 13

It is a kind of solution where it contains the maximum amount of solute dissolve in a given amount of solvent?

Accepted Answer

saturated solution

Answer

unsaturated solution

Answer

supersaturated solution

Question 14

A part of the solution that dissolves the solute is known as

Accepted Answer

solvent

Answer

colloid

Answer

solubility

Question 15

How does tempeature affect solubility?

Accepted Answer

solubility increases with an increase in temperature

Answer

solubility increases with a decrease in temperature

Answer

solubility is not affected by temperature

Question 16

What is the common solvent in everyday life?

Accepted Answer

water

Answer

ethanol

Answer

carbon containing chemical

Question 17

These are solutions which do not appear in nature instead they are made by man. Which is an example of manufactured solution?

Accepted Answer

cologne

Answer

blood

Answer

sea water

Question 18

Variables that are expected to change

Accepted Answer

dependent

Answer

independent

Answer

hypothesis

Question 19

How will you describe a mixture out of salt and oil?

Accepted Answer

It becomes heterogenous mixture, the salt is immiscible into the oil

Answer

It becomes homogenous solution, the salt is miscible into the oil

Answer

The oil can dissolve in salt

Question 20

Why are copper and aluminum used for carrying electrical currents and as utensils for cooking?

Accepted Answer

They are good conductors of heat and electricity

Answer

They are brittle as solids.

Answer

They can be drawn into wires.

Question 21

In aqueous solution, the solvent used is?

Accepted Answer

water

Answer

soil

Answer

kerosene

Question 22

Chlorine, iodine and bromine are nonmetals. What BEST distinguishes a nonmetal from a metal is…

Accepted Answer

Poor conductor of electricity

Answer

Ductility

Answer

Boiling point

Question 23

Table salt is a compound of the two elements sodium and chlorine. Which of the following statements is true?

Accepted Answer

The symbol for sodium and chlorine is Na and Cl.

Answer

Sodium and chlorine belong to the same group in periodic table.

Answer

Table salt is listed in the periodic table.

Question 24

The chemical symbol for mercury is…

Accepted Answer

Hg

Answer

Me

Answer

M

Question 25

Calcium chloride is a compound of the two elements calcium and chlorine. Which of the following statements is TRUE?

Accepted Answer

The symbol for calcium chloride includes Ca and Cl.

Answer

Calcium and chlorine belong to the same group in the periodic table.

Answer

Calcium chloride is listed in the periodic table.

Question 26

What is the percentage concentration in the following solution: 4g of sucrose in 80 grams water?

Accepted Answer

4.8%

Answer

5.4%

Answer

8.4%

Question 27

Something that can be dissolved in a solution is called?

Accepted Answer

soluble

Answer

solution

Answer

insoluble

Question 28

What are the two (2) classes of matter?

Accepted Answer

pure substances and mixtures

Answer

homegeneous and heterogeneous

Answer

elements and compounds

Question 29

which of the following is NOT an example of a compound?

Accepted Answer

oxygen

Answer

smoke

Answer

gun powder

Question 30

which of the follwing is an element?

Accepted Answer

iron

Answer

carbon dioxide

Answer

sugar

Question 31

All of the following affects the solubility of a solid in a liquid EXCEPT

Accepted Answer

surface area

Answer

strirring

Answer

temperature

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