There is some flour. There is some juice. There are some sweets. There is some lemonade. There are some oranges. There are some tomatoes. There is some solt. There are some carrots. There is some sugar. There is some meat. There are some sausages. There are some hamburgers. There is some cream. There are some pizzas.
Запомни на будущее там где окончание -s то пишется are, а где нету окончания и слово стоит в единственном числе то is.