Christmas Test

Question 1

What is an element

Answer 1

An element is a substance that contains one type of atom only

Question 2

Define the term an atom

Answer 2

An atom is the building block of a material. It contains of three substance particles

Question 3

What mass is in a proton

Answer 3

1

Question 4

What mass is in neutron

Answer 4

1

Question 5

What mass is in an electron

Answer 5

1/1040

Question 6

Define the term molecules

Answer 6

They consist of two or more atoms chemically combined

Question 7

Define the term molecules of an element

Answer 7

Two or more particles of the same element eg hydrogen gas

Question 8

Define the term molecules of a compound

Answer 8

Two or more atoms of a different element’s chemical composition eg water H2O

Question 9

Name 3 alkali metals

Answer 9

Lithium,sodium and potassium

Question 10

What are alkali metals

Answer 10

Alkali metals all have 1 electron on the outer shell which they want to loose. This makes them very reactive

Question 11

Where are alkali metals stored

Answer 11

Stored under oil to stop them from tarnishing (reacting with O2)

Question 12

What happens when alkali metals are put in water

Answer 12

They are less dense than water so they float. They also fizz across the surface as they melt into a ball. Steam is released of due to heat released. Litumes paper turns blue as it is now an base and not an acid

Question 13

What happens when alkali metals are put in water

Answer 13

They are less dense than water so they float. They also fizz across the surface as they melt into a ball. Steam is released of due to heat released. Litumes paper turns blue as it is now an base and not an acid

Question 14

Define the term atomic number

Answer 14

the number of protons in the nucleus of an atom

Question 15

Define the term mass number

Answer 15

the sum of the numbers of protons and neutrons present in the nucleus of an atom

Question 16

What are protons

Answer 16

is a subatomic particle with a positive electric charge

Question 17

What are neutrons

Answer 17

an uncharged atomic particle

Question 18

Define the term electron

Answer 18

negatively charged subatomic particle that can be either bound to an atom or free

Question 19

What is the second group called

Answer 19

Alkaline earth metals

Question 20

How are alkaline earth metals alike

Answer 20

They all have 2 outer electrons they don’t want

Question 21

Name the 7 group

Answer 21

The halogens

Question 22

How are the halogens alike

Answer 22

They all have 7 outer electrons and are very reactive as they want to gain one

Question 23

What is group 8 called

Answer 23

The noble gasses

Question 24

What do the Nobel gases all have on common

Answer 24

All have a full outer shell which makes them very un reactive

Question 25

What do all the Nobel gases have in common

Answer 25

They all have a full outer shell which makes them very un reactive

Question 26

Define the term chemical bounding

Answer 26

It’s when 2 or more elements join together chemically

Question 27

What is ionic chemical bounding

Answer 27

It occurs between metal and nonmetal atoms. Metal atoms lose an electron while nonmetal ones gain one. Eg MgO

Question 28

Define the term covalent chemical bounding

Answer 28

It occurs between nonmetal atoms which share electrons. eg. H2 and CO2

Question 29

What happens during day 1-5 of the menstrual cycle

Answer 29

Your period starts as the lining of the womb gets released and comes out of the uterus

Question 30

What happens during days 6-12 of the menstrual cycle

Answer 30

The lining of the womb builds up to prepare for pregnancy

Question 31

What happens during day 14 of the menstrual cycle

Answer 31

Ovulation occurs and the egg gets released into the fallopian tube

Question 32

What happens during days 16-28 of the menstrual cycle

Answer 32

The lining of the womb stays the same and waits for the next cycle to continue and the cycle stays over again

Question 33

What happens during the fertile period

Answer 33

It is the time that a woman can get pregnant

Question 34

What does the sperm duct do

Answer 34

It carries sperm cells to the penis

Question 35

What happens in the testies

Answer 35

It is where the sperm is produced

Question 36

What happens in the penis

Answer 36

It is the transfer and fusing together of sperm to the vagina

Question 37

What happens on the scrotem

Answer 37

It is there to keep the temperature of the testies lower

Question 38

How many copies of each gene does a person have in each cheak sell

Answer 38

2

Question 39

What is meant be variation

Answer 39

It is the differences in the characteristics of the organisms

Question 40

What is the name of the process which evolution occurs

Answer 40

Theory of natural selection

Question 41

What does the womb do

Answer 41

It holds the foetus during pregnancy

Question 42

What is the cervix

Answer 42

It is the neck of the womb

Question 43

What does the vagina do

Answer 43

It is where the penis releases seaman and it’s the birth canal

Question 44

What does the fallopian tube do

Answer 44

It carries the egg words the uterus

Question 45

What does the overy do

Answer 45

The overy produces the egg

Question 46

What is a subatomic particle

Answer 46

A particle smaller than an atom (e.g., a neutron)

Question 47

Example of a mixture

Answer 47

Salt and water

Question 48

Explain of a compound

Answer 48

Water (H2O)

Question 49

What is a ion

Answer 49

an atom or molecule with a net electric charge due to the loss or gain of one or more electrons

Question 50

Name 2 forms of chemical bonding

Answer 50

Covalente and ionic

Question 51

Define the term E waste

Answer 51

Electronic waste (e-waste), is a generic term used to describe all types of old, end-of-life or discarded electrical and electronic equipment

Question 52

Why is it important that engineers use the same electrical symbols?

Answer 52

So they can understand a diagram by looking at it

Question 53

What is atomic number?

Answer 53

The number of protons present in an atom

Question 54

Name two safety precautions that should be taken when looking at an eclipse

Answer 54

Do not look directly at the Sun. Use only approved solar filters. Do not use sunglasses, unfiltered cameras, telescopes or binoculars.

Question 55

What type of eclipse occurs when the moon moves in front of the Sun?

Answer 55

Solar eclipse

Question 56

List four positives of using a smart phone

Answer 56

• They make it easier to communicate with people. • They present an opportunity to learn new things. • They help develop businesses. • They can predict personal health issues.

Question 57

List three negatives of using a smart phone

Answer 57

• They contribute to sleep disturbance issues. • They are replacing person-to-person communication. • They expose children to unsafe content on the world wide web.

Question 58

Can radio waves travel through matter?

Answer 58

Radio waves can travel through matter because radio waves are electromagnetic radiation.

Question 59

What is temperature?

Answer 59

Temperature measures how hot or cold and object is and it’s measured in degrees Celsius

Question 60

What is heat?

Answer 60

Heat is a form of energy. Energy is the ability to do work.ie move something and it is measured in joule. (J)