Practice Atoms And Molecules (3) - Atoms and Molecules

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the definition of an atom?
Show hintHide hint
Think about the smallest piece of matter.
Question 2.
Can an atom exist independently?
Show hintHide hint
Consider what happens in a chemical reaction.
3Question 3.
What does the law of conservation of mass state?
- Mass can be created in reactions
- Mass cannot be created or destroyed
- Mass changes in chemical processes
Show hintHide hint
Think about chemical reactions.
4Question 4.
True or False: All atoms of a given element are identical.
- True
- False
Show hintHide hint
Recall Dalton's postulates.
Question 5.
If 10g of substance A reacts with 15g of substance B, what will be the mass of the products?
Show hintHide hint
Add the masses of the reactants together.
Question 6.
According to Dalton's atomic theory, how do atoms combine to form compounds?
Show hintHide hint
Think about how 'friends' combine to form a 'team' in specific numbers.

4 more questions in this section. Enroll free to practise them all.