what is science

Question 1

what are the three limitations science has?

Answer 1

1. it’s limited to the physical world (no supernatural/otherworldly aspects can be tested through science)

2.science is influenced by previous experience: biased perceptions

3. doesn’t prove anything absolutely

Question 2

Giga

Answer 2

10^9

1 gigabyte (GB) = 1000 megabyte (MB)

(B)

Question 3

mega

Answer 3

10^6

1 megabyte (MB) = 1000 kilobyte (KB) = 106 byte

(B)

Question 4

Kilo

Answer 4

10^3

1 kilograms (kg) = 1000 grams (g)

Question 5

Centi

Answer 5

10^-2

100 centimeter (cm) = 1 meter (m)
1 cm = 10-2 m

Question 7

Milli

Answer 7

10^-3

1000 millimeter (mm) = 1 meter (m)
1 mm = 10-3 m

Question 8

Micro

Answer 8

10^-6

1000 microliter (μL) = 1 milliliter (mL)

Question 9

Nano

Answer 9

10^-9

1000 nanosecond (ns) = 1 microsecond (μs)

1 ns = 10-9 s

Question 10

Pico

Answer 10

10^-12

1000 picosecond (ps) = 1 nanosecond (ns)

1 ps = 10-12 s

Question 11

chemistry is

Answer 11

Chemistry is the study of matter, analysing its structure, properties and behaviour to see what happens when they change in chemical reactions.

Question 12

atom

Answer 12

An atom is the basic unit of a chemical element. It’s the smallest component of an element that retains the chemical properties of that element

Question 13

element

Answer 13

Each element is made up of atoms who’re all the same.

Question 14

compound

Answer 14

A compound is a substance formed when two or more elements are chemically united in fixed proportions

Question 15

mixture

Answer 15

A mixture is a combination of two or more substances where the substances are not chemically bonded to each other.