Nat 5 Flashcards
(20 cards)
What is a chemical reaction
When one or more substances change to produce something new
What is matter made up of?
Atoms
What is it called when atoms re-arange?
A chemical reaction
Is a new substance always produced during a chemical reaction?
Yes
Whats a physical change?
When substances are mixed or separated without forming a new substance
Name 4 common signs of a chemical reaction
•change in colour
•gas produced (bubbles or fizzing)
•precipitate forming (a solid created from the mixing of solutions)
•an energy change (heat,light,sound)
Do all chemical reactions involve a change in energy?
Yes
In Data Handling for a bar graph what does SLURP stand for?
Scale
Labels
Units
Ruler
Plotting
What is the name of the tiny particles that make up everything in the universe
Atoms
What is an element?
A substance made up of only one type of atom
What do elements have to identify them
A unique one or two letter sybmol
What are rows in a periodic table called?
Periods
What are columns in the periodic table called?
Groups
What are group one of the periodic table known as?
Alkali metals
What are group 2 of the periodic table known as?
Alkali earth metals
What are group 7 of the periodic table called?
Halogens
What are group 8 of the periodic table called?
The noble gasses
What else is group 8 in the periodic table known as?
Group 0
Do elements in the same group of the periodic table have similar chemical properties?
Yes
