c1 atomic structure
Cards (70)
- What are substances made of?
- How are different types of atoms represented?
- What is a compound?
- What is the chemical formula for water?
- How many hydrogen atoms are in one water molecule?
- What does it mean if there's no number after a symbol in a chemical formula?
- What do chemical reactions change?
- How can we represent a chemical reaction?
- What must be true about the number of atoms in a chemical reaction?
- What is the first step in balancing chemical equations?
- How do you balance hydrogen atoms in a reaction?
- What happens when you double the O2 in a reaction?
- What is a mixture?
- What is an example of a mixture?
- How can you separate sand from water?
- What does crystallization do?
- What is distillation used for?
- What is fractional distillation?
- Why are melting and evaporation considered physical changes?
- What are the three main states of matter?
- How do particles behave in a solid?
- How do particles behave in a gas?
- What must be supplied to melt or evaporate a substance?
- What do state symbols indicate in chemical equations?
- What does the symbol (s) represent?
- What does the symbol (l) represent?
- What does the symbol (g) represent?
- What does the symbol (aq) represent?
- Who discovered that atoms are made of positive and negative charges?
- What model did JJ Thompson propose?
- Who discovered the nucleus of the atom?
- What did Rutherford's experiment with gold atoms show?
- Who discovered electron shells?
- What did James Chadwick discover?
- What charge do protons have?
- What charge do electrons have?
- What charge do neutrons have?
- What is the atomic number?
- What does the mass number indicate?
- What are isotopes?