Science Yr 10 Exam

Question 1

Where are protons located in an atom?

Answer 1

Nucleus

Question 2

Where are neutrons located in an atom?

Answer 2

Nucleus

Question 3

Where are electrons located in an atom?

Answer 3

Orbit around nucleus

Question 4

What is a protons charge?

Answer 4

+1

Question 5

What is a neutrons charge?

Answer 5

Neutral

Question 6

What is a electrons charge?

Answer 6

-1

Question 7

What is a protons mass?

Answer 7

1 amu

Question 8

What is a neutrons mass?

Answer 8

1 amu

Question 9

What is a electrons charge?

Answer 9

1/2000th amu

Question 10

What is an atom?

Answer 10

The smallest particle of matter

Question 11

What is a molecule?

Answer 11

2 or more atoms bonded together

Question 12

What is an element?

Answer 12

Only one type of atom
eg. 1 HE (helium) 2 H (hydrogen) 8 S (sulfur)

Question 13

What is a compound?

Answer 13

Made up of two or more different atoms bonded together.

Question 14

What is the mass number?

Answer 14

Protons + neutrons = mass

Question 15

What is atomic number?

Answer 15

Number of protons

Question 16

What is group 1 on the periodic table called?

Answer 16

Alkali Metals

Question 17

What is group 2 on the periodic table called?

Answer 17

Alkali Earth Metals

Question 18

What is group 3-12 on the periodic table called?

Answer 18

Transition Metals

Question 19

What is group 13 on the periodic table called?

Answer 19

Boron group

Question 20

What is group 14 on the periodic table called?

Answer 20

Carbon group

Question 21

What is group 15 on the periodic table called?

Answer 21

Nitrogen group

Question 22

What is group 16 on the periodic table called?

Answer 22

Oxygen group

Question 23

What is group 17 on the periodic table called?

Answer 23

Halogens

Question 24

What is group 18 on the periodic table called?

Answer 24

Noble gases

Question 25

What are the horizontal lines on the periodic table called

Answer 25

Periods

Question 26

What is a Neutralisation Reaction

Answer 26

Acid + base reactions involve the transfer of a hydrogen from the acid to the base. eg. Acid + Base → Salt + Water

Question 27

What is an acid + metal Reaction

Answer 27

Acid/metal reactions result in the formation of a salt and hydrogen gas. eg. Acid + metal → salt + hydrogen gas

Question 28

What is an acid + Carbonate Reactions

Answer 28

When an acid is reacted with a carbonate, a salt, water and carbon dioxide gas is produced. eg. Acid + “carbonate” → salt + water + carbon dioxide gas

Question 29

What is a Combustion Reactions

Answer 29

Combustion is generally burning in air, where a substance chemically combines with oxygen. eg. Hydrocarbon + oxygen → carbon dioxide + water

Question 30

What is the DNA structure

Answer 30

DNA consists of two molecules that are arranged into a ladder-like structure called a Double Helix.

Question 31

What is distance?

Answer 31

How far an object travels, doesn't depend on direction, SCALAR quantity

Question 32

What is displacement?

Answer 32

The difference between an objects final position and starting position, depends on direction, VECTOR quantity

Question 33

What is speed?

Answer 33

Rate at which an object is moving Speed = distance/time

Question 34

What is velocity?

Answer 34

Speed with direction Velocity = displacement/Time

Question 35

What is a SCALAR quantity?

Answer 35

Has direction not magnitude

Question 36

What is a VECTOR quantity?

Answer 36

Has direction and magnitude

Question 37

What is acceleration?

Answer 37

Rate of change of velocity of an object. Acceleration = final v - initial v time

Question 38

What is deceleration?

Answer 38

Negative acceleration, when a body slows down or decreases velocity.