Energy & Matter

Question 1

What is Chemistry?

Answer 1

Chemistry is the study of Matter, its properties & the energy changes involved.

Question 2

What is Matter?

Answer 2

Matter is anything that has mass and occupies space

Question 3

What is Energy?

Answer 3

Energy is the ability todo work.

Question 4

What are the 3 main states of Matter?

Answer 4

1: Solid
2: Liquid
3: Gas

Question 5

What are the 2 types of Energy?

Answer 5

1: Kinetic ( energy in action )
2: Potential ( energy of position )

Question 6

What are the 4 forms of energy?

Answer 6

1: Chemical energy - (stored in the bonds of substances)
2: Electrical energy - (results from the movement of charged particles)
3: Mechanical energy - (energy directly involving movement)
4: Electromagnetic energy - (travels in waves)

Question 7

What is an Element?

Answer 7

An Element is a basic substance that other things are composed of. They can’t be broken down into a simpler substance.

Question 8

How many elements are in the Periodic Table?

Answer 8

112

Question 9

How many elements occur in the human body naturally?

Answer 9

92

Question 10

What are the 4 elements that make up 96% of the human body?

Answer 10

Carbon, Hydrogen, Oxygen & Nitrogen

Question 11

What is an elements Physical Properties?

Answer 11

Physical properties are those we can detect with our senses (such as colour and texture) or measure (such as boiling point and freezing point).

Question 12

What is an elements Chemical Properties?

Answer 12

Chemical properties pertain to the way atoms interact with other atoms (bonding behaviour).