flashcards

1. What are the properties of a metal?

Conducts heat, conducts electricity, ductile, malleable, shiny, tend to be solid at room temp (except mercury)

1. What are the properties of a non-metal?

Brittle, does not conduct heat or electricity, dull, can be solid liquid or gas

1. What is the definition of malleable?

can be hammered into a shape

1. What is the definition of ductile?

can be stretched into a wire

1. What is the definition of an element?

A substance made of only one type of atom

1. What is the definition of an atom?

The smallest part of an element that can exist.

1. What is the definition of compound?

a substance made up of two or more elements chemically joined together

1. What are the 5 key observations of a chemical change?

Fizzing/bubbling, odour, colour change, heat change, precipitate formed,

1. What is a physical change? Give examples

A reversible change e.g. a change in state : evaporation or melting

1. What is a reactant?

A starting substance in a chemical reaction (left hand side of the arrow)

1. What is a product?

A substance that is made in a chemical reaction (right hand side of the arrow)

1. Does a compound have the same properties as the elements it is made from?

No the properties of a compound and its elements are different

1. What does NaCl mean? In terms of the elements and numbers of atoms?

This is a compound containing sodium and chlorine. There is one atom of each element

1. What does C₆H₁₂O₆ mean? In terms of the elements involved and numbers of atoms?

This compound contains 6 atoms of carbon, 12 atoms of hydrogen and 6 atoms of oxygen

1. What is the definition of a chemical reaction?

A change in which atoms are rearranged to create new substances (new products)

1. Which symbol do you find in a word equation in between the reactants and the products?

An arrow (→). never an equals sign!  e.g reactants  → products

1. What is the definition of the word atom?

The smallest part of an element that can exist 

1. What is the definition of the word proton?

a positively charged subatomic particle

1. What is the definition of the word neutron?

a neutral charged subatomic particle

1. What s the definition of the word electron?

a negatively charged subatomic particle

1. What is the definition of nucleus in chemistry?

the centre of the atom where protons and neutrons are found 

1. What is a trend?

specific patterns that can be identified in data and graphs

1. What is the structure of an atom?

(on the back of the card draw and label the diagram of an atom from lesson 2.2)

1. What is the mass and charge of a proton?

Mass of 1 and charge of +1

1. What is the mass and charge of a neutron?

Mass of 1 and charge of 0

1. What is the mass and charge of an electron?

Mass of 1/2000 and charge of -1