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UNIT 01 SCIENTIFIC ACTIVITY (CHEMISTRY)

Total questions: 79

Worksheet time: 40mins

Name
Class
Date
1.

What is an ordered body of objective knowledge which can be verified experimentally?

a)

observation

b)

science

c)

scientific method

d)

a hypothesis

e)

experimentation

2.

What is the method of working based on observation and experimentation, which scientists use to investigate the phenomena produced in nature?

a)

observation

b)

science

c)

scientific method

d)

a hypothesis

e)

experimentation

3.

What is it to carefully apply the senses to an object or phenomenon in order to study it?

a)

observe

b)

make an hypothesis

c)

use a scientific method

d)

to experiment

e)

to search information

4.

A sugar cube is put into a beaker with water. What happens to the sugar?

a)

it dissolves

b)

it disapears

c)

it melts

d)

it boils

5.

A sugar cube is put into a beaker with water. What is the water?

a)

disolvent

b)

solute

c)

gas

d)

solid

6.

A sugar cube is put into a beaker with water. What is the sugar?

a)

disolvent

b)

solute

c)

gas

d)

solid

7.

What is it called when you look for data can be found in books or publications on the subject, or on trustworthy web pages, such as those of universities or research centres?

a)

observe

b)

make an hypothesis

c)

use a scientific method

d)

to experiment

e)

to search information

8.

What is a supposition which attempts to explain an observed phenomenon?

a)

an observation

b)

a hypothesis

c)

a scientific method

d)

information

e)

an analysis

9.

Experimentation is to check if a hypothesis is true or false.

a)

true

b)

falso

10.

Science is to check if a hypothesis is true or false.

a)

true

b)

false

11.

What consists of reproducing an observed phenomenon under controlled conditions which can be modified to determine what is happening?

a)

observation

b)

statement of hypothesis

c)

search for information

d)

experimentation

12.

When magnitudes or conditions are changed in an experiment, what are they called?

a)

control

b)

variables

13.

When magnitudes or conditions are NOTchanged in an experiment, what are they called?

a)

control

b)

variables

14.

Data can be organised in tables made up of rows and columns where the values of the various magnitudes are shown.

a)

Data table

b)

Pie chart

c)

Bar chart

d)

Graph

15.

This is a circle divided into sectors, where the size of each sector is proportional to the value represented.

a)

Data table

b)

Pie chart

c)

Bar chart

d)

Graph

16.

This has vertical or horizontal bars, where the length of each bar is proportional to the value represented.

a)

Data table

b)

Pie chart

c)

Bar chart

d)

Graph

17.

Representation on coordinate axes

a)

Data table

b)

Pie chart

c)

Bar chart

d)

Graph

18.

a)

Data table

b)

Pie chart

c)

Bar chart

d)

Graph

19.

a)

Data table

b)

Pie chart

c)

Bar chart

d)

Graph

20.

a)

Data table

b)

Pie chart

c)

Bar chart

d)

Graph

21.

a)

Data table

b)

Pie chart

c)

Bar chart

d)

Graph

22.

What is a hypothesis confirmed through experiments?

a)

hypothesis

b)

observation

c)

scientific experimentation

d)

scientific law

23.

What scientific law can be defined through a verbal or written statement, but cannot be expressed numerically?

a)

Quantitative law

b)

Qualitative law

24.

What scientific law can be expressed through numbers. Thus, in addition to being defined through a verbal or written statement, it can be represented as a mathematical formula and as a graph?

a)

Qualitative law

b)

Quantitative law

25.

What properties can be measured? (elige 3)

a)

mass

b)

volume

c)

beauty

d)

colour

e)

temperature

26.

What properties CAN NOT be measured? (elige 2)

a)

mass

b)

volume

c)

beauty

d)

colour

e)

temperature

27.

What is any property of a substance which can be measured?

a)

temperature

b)

magnitude

c)

weight (peso)

d)

characteristic

e)

unit of measurement

28.

What is a standard which, taken as a reference, serves to express the measurement of a magnitude?

a)

temperature

b)

mass

c)

weight

d)

characteristic

e)

unit of measurement

29.

Identify the units of measurements (elige 3)

a)

mass

b)

kilogram

c)

volume

d)

second

e)

litre

30.

Identify the magnitudes (elige 2)

a)

mass

b)

kilogram

c)

volume

d)

second

e)

litre

31.

What type of measurements are obtained directly using a measuring instrument? (ruler)

a)

Indirect measurements

b)

direct measurements

32.

What type of measurements are obtained by using a mathematical formula? The measurement of a surface is not obtained by using a square metre, but by measuring some lengths and applying geometrical formulas.

a)

Indirect measurements

b)

direct measurements

33.

What is the type of magnitude that is obtained through direct measurement and do not depend on any other magnitude?

a)

Base magnitude

b)

derived magnitude

34.

What is the type of magnitude that is obtained from base magnitudes?

a)

magnitude

b)

derived magnitude

35.

These are past non-conventional units of measurement. What is a?

a)

a palm

b)

a cubit

c)

a finger

d)

a yard

36.

These are past non-conventional units of measurement. What is b?

a)

a palm

b)

a cubit

c)

a finger

d)

a yard

37.

These are past non-conventional units of measurement. What is c?

a)

a palm

b)

a cubit

c)

a finger

d)

a yard

38.

These are past non-conventional units of measurement. What is d?

a)

a palm

b)

a cubit

c)

a finger

d)

a yard

39.

What is the magnitude for the symbol of l? (Choose 3)

a)

Length

b)

Mass

c)

Electrical current

d)

Light intensity

e)

Amount of substance

40.

What is the magnitude for the symbol of m?

a)

Length (longitud)

b)

Mass (masa)

c)

Electrical current (corriente eléctrica)

d)

Light intensity (intensidad de luz)

e)

Amount of substance

41.

What is the magnitude for the symbol of T?

a)

Length (longitud)

b)

Mass (masa)

c)

Thermodynamic temperature

d)

Light intensity (intensidad de luz)

e)

Amount of substance

42.

What is the magnitude for the symbol of t?

a)

Length (longitud)

b)

Mass (masa)

c)

Thermodynamic temperature

d)

Time

e)

Amount of substance

43.

What is the magnitude for the symbol of n?

a)

Length (longitud)

b)

Mass (masa)

c)

Thermodynamic temperature

d)

Time

e)

Amount of substance

44.

What is the magnitude for the symbol of S?

a)

Surface area

b)

Volume

c)

Velocity

d)

Density

e)

Mass

45.

What is the magnitude for the symbol of V?

a)

Surface area

b)

Volume

c)

Velocity

d)

Density

e)

Mass

46.

What magnitude does the following unit(unidad) of measurement(medida) belong to? metre

a)

Length

b)

Mass

c)

Volume

d)

Time

e)

Temperature

47.

What magnitude does the following unit(unidad) of measurement(medida) belong to? kilogram

a)

Length

b)

Mass

c)

Volume

d)

Time

e)

Temperature

48.

What magnitude does the following unit(unidad) of measurement(medida) belong to? Kelvin

a)

Length

b)

Mass

c)

Volume

d)

Time

e)

Temperature

49.

What magnitude does the following unit(unidad) of measurement(medida) belong to? second

a)

Length

b)

Mass

c)

Volume

d)

Time

e)

Temperature

50.

What magnitude does the following unit(unidad) of measurement(medida) belong to? ampere

a)

Length

b)

Electrical current

c)

Volume

d)

light intensity

e)

surface area

51.

What magnitude does the following unit(unidad) of measurement(medida) belong to? candela

a)

Length

b)

Electrical current

c)

Amount of substance

d)

light intensity

e)

surface area

52.

What magnitude does the following unit(unidad) of measurement(medida) belong to? mole

a)

Length

b)

Electrical current

c)

Amount of substance

d)

light intensity

e)

surface area

53.

What magnitude does the following unit(unidad) of measurement(medida) belong to? square metre

a)

Length

b)

mass

c)

Amount of substance

d)

volume

e)

surface area

54.

What magnitude does the following unit(unidad) of measurement(medida) belong to? cubic metre

a)

Length

b)

mass

c)

Amount of substance

d)

volume

e)

surface area

55.

What magnitude does the following unit(unidad) of measurement(medida) belong to? metres per second

a)

Length

b)

mass

c)

Density

d)

volume

e)

velocity

56.

What magnitude does the following unit(unidad) of measurement(medida) belong to? kilograms per cubic metre

a)

Length

b)

mass

c)

Density

d)

volume

e)

velocity

57.
a)

Test tubes

b)

Erlenmeyer flask

c)

Beaker

d)

Graduated cylinders

e)

Burette

58.
a)

Test tubes

b)

Erlenmeyer flask

c)

Beaker

d)

Graduated cylinders

e)

Burette

59.
a)

Test tubes

b)

Erlenmeyer flask

c)

Beaker

d)

Graduated cylinders

e)

Burette

60.
a)

Test tubes

b)

Erlenmeyer flask

c)

Beaker

d)

Graduated cylinders

e)

Burette

61.
a)

Test tubes

b)

Erlenmeyer flask

c)

Beaker

d)

Graduated cylinders

e)

Burette

62.
a)

Round-bottom flask

b)

Volumetric flask

c)

Pipette

d)

Funnel

e)

Gibson or separating funnel

63.
a)

Round-bottom flask

b)

Volumetric flask

c)

Pipette

d)

Funnel

e)

Gibson or separating funnel

64.
a)

Round-bottom flask

b)

Volumetric flask

c)

Pipette

d)

Funnel

e)

Gibson or separating funnel

65.
a)

Round-bottom flask

b)

Volumetric flask

c)

Pipette

d)

Funnel

e)

Gibson or separating funnel

66.
a)

Round-bottom flask

b)

Volumetric flask

c)

Pipette

d)

Funnel

e)

Gibson or separating funnel

67.
a)

Pestle and mortar

b)

Porcelain crucible

c)

Tripod

d)

Gauze

e)

Retort stand

68.
a)

Pestle and mortar

b)

Porcelain crucible

c)

Tripod

d)

Gauze

e)

Retort stand

69.
a)

Pestle and mortar

b)

Porcelain crucible

c)

Tripod

d)

Gauze

e)

Retort stand

70.
a)

Pestle and mortar

b)

Porcelain crucible

c)

Tripod

d)

Gauze

e)

Retort stand

71.
a)

Pestle and mortar

b)

Porcelain crucible

c)

Tripod

d)

Gauze

e)

Retort stand

72.
a)

Double clamp

b)

Bunsen burner

c)

Spatula

d)

Wooden test-tube holder

e)

Digital balance

73.
a)

Double clamp

b)

Bunsen burner

c)

Spatula

d)

Wooden test-tube holder

e)

Digital balance

74.
a)

Double clamp

b)

Bunsen burner

c)

Spatula

d)

Wooden test-tube holder

e)

Digital balance

75.
a)

Double clamp

b)

Bunsen burner

c)

Spatula

d)

Wooden test-tube holder

e)

Digital balance

76.
a)

Double clamp

b)

Bunsen burner

c)

Spatula

d)

Wooden test-tube holder

e)

Digital balance

77.
a)

Double clamp

b)

Vernier scale

c)

Ammeter

d)

Dynamometer

e)

Digital balance

78.
a)

Double clamp

b)

Vernier scale

c)

Ammeter

d)

Dynamometer

e)

Digital balance

79.
a)

Double clamp

b)

Vernier scale

c)

Ammeter

d)

Dynamometer

e)

Digital balance

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