C1- Atoms
Cards (64)
- What is the chemical formula for water?
- What are substances made of?
- How are different types of atoms represented?
- What is a compound?
- How many hydrogen atoms are in one water molecule?
- What does it mean if there is no number after a symbol in a chemical formula?
- What happens during chemical reactions?
- 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 a chemical equation?
- How do you balance hydrogen atoms in a reaction?
- What is a mixture?
- What is an example of a mixture?
- How can you separate large insoluble particles from a liquid?
- What is crystallization used for?
- What does distillation involve?
- What is fractional distillation?
- What are the three main states of matter?
- How do particles behave in a solid?
- What happens to water when it becomes vapor?
- What do state symbols indicate in chemical equations?
- What is required to melt or evaporate a substance?
- What does (s) represent in state symbols?
- What does (l) represent in state symbols?
- What does (g) represent in state symbols?
- What does (aq) represent in state symbols?
- 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 are protons and electrons' charges?
- What is the relative mass of neutrons?
- What does the atomic number represent?
- What must be true for an atom to be neutral?
- What happens when an atom gains or loses electrons?
- What does the mass number indicate?
- What are isotopes?
- Why might the mass number not be a whole number?